scripts/install-with-licenses.sh
#!/bin/bash

set -ue
# set -x

RELEASE_VERSION="0.x.0"
RELEASE_TAG="0.x.0"
RELEASE_URL="https://github.com/comby-tools/comby/releases"

INSTALL_DIR=/usr/local/bin

function ctrl_c() {
        rm -f $TMP/$RELEASE_BIN &> /dev/null
        printf "${RED}[-]${NORMAL} Installation cancelled. Please see https://github.com/comby-tools/comby/releases if you prefer to install manually.\n"
        exit 1
}

trap ctrl_c INT

colors=0
if [ -z "$TERM" ] && which tput >/dev/null 2>&1; then
    colors=$(tput colors)
fi
if [ -t 1 ] && [ -n "$colors" ] && [ "$colors" -ge 8 ]; then
  RED="$(tput setaf 1)"
  GREEN="$(tput setaf 2)"
  YELLOW="$(tput setaf 3)"
  BOLD="$(tput bold)"
  NORMAL="$(tput sgr0)"
else
  RED=""
  GREEN=""
  YELLOW=""
  BOLD=""
  NORMAL=""
fi

EXISTS=$(command -v comby || echo)

if [ -n "$EXISTS" ]; then
    INSTALL_DIR=$(dirname $EXISTS)
fi

if [ ! -d "$INSTALL_DIR" ]; then
    printf "${YELLOW}[-]${NORMAL} $INSTALL_DIR does not exist. Please download the binary from ${RELEASE_URL} and install it manually.\n"
    exit 1
fi

TMP=${TMPDIR:-/tmp}

ARCH=$(uname -m || echo dunno)
case "$ARCH" in
    x86_64|amd64) ARCH="x86_64";;
#   x86|i?86) ARCH="i686";;
    *) ARCH="OTHER"
esac

OS=$(uname -s || echo dunno)

if [ "$OS" = "Darwin" ]; then
  OS=macos
fi

if [ "$OS" = "Linux" ]; then
  OS=linux
fi

RELEASE_BIN="comby-${RELEASE_TAG}-${ARCH}-${OS}"
RELEASE_TAR="$RELEASE_BIN.tar.gz"
RELEASE_URL="https://github.com/comby-tools/comby/releases/download/${RELEASE_TAG}/${RELEASE_TAR}"


if [ ! -e "$TMP/$RELEASE_TAR" ]; then
    printf "${GREEN}[+]${NORMAL} Downloading ${YELLOW}comby $RELEASE_VERSION${NORMAL}\n"

    SUCCESS=$(curl -s -L -o "$TMP/$RELEASE_TAR" "$RELEASE_URL" --write-out "%{http_code}")

    if [ "$SUCCESS" == "404" ]; then
        printf "${RED}[-]${NORMAL} No binary release available for your system.\n"
        rm -f $TMP/$RELEASE_TAR
        exit 1
    fi
	printf "${GREEN}[+]${NORMAL} Download complete.\n"
fi

cd "$TMP" && tar -xzf "$RELEASE_TAR"
chmod 755 "$TMP/$RELEASE_BIN"

echo "${GREEN}[+]${NORMAL} Installing comby to $INSTALL_DIR"
if [ ! $OS == "macos" ]; then
    sudo cp "$TMP/$RELEASE_BIN" "$INSTALL_DIR/comby"
else
    cp "$TMP/$RELEASE_BIN" "$INSTALL_DIR/comby"
fi

SUCCESS_IN_PATH=$(command -v comby || echo notinpath)

if [ $SUCCESS_IN_PATH == "notinpath" ]; then
    printf "${BOLD}[*]${NORMAL} Comby is not in your PATH. You should add $INSTALL_DIR to your PATH.\n"
    rm -f $TMP/$RELEASE_TAR
    rm -f $TMP/$RELEASE_BIN
    exit 1
fi


CHECK=$(printf 'printf("hello world!\\\n");' | $INSTALL_DIR/comby 'printf("hello :[1]!\\n");' 'printf("hello comby!\\n");' .c -stdin || echo broken)
if [ "$CHECK"  == "broken" ]; then
    printf "${RED}[-]${NORMAL} ${YELLOW}comby${NORMAL} did not install correctly.\n"
    printf "${YELLOW}[-]${NORMAL} My guess is that you need to install the pcre library on your system. Try:\n"
    if [ $OS == "macos" ]; then
        printf "${YELLOW}[*]${NORMAL} ${BOLD}brew install pcre && bash <(curl -sL get.comby.dev)${NORMAL}\n"
    else
        printf "${YELLOW}[*]${NORMAL} ${BOLD}sudo apt-get install libpcre3-dev && bash <(curl -sL get.comby.dev)${NORMAL}\n"
    fi
    rm -f $TMP/$RELEASE_BIN
    rm -f $TMP/$RELEASE_TAR
    exit 1
fi

rm -f $TMP/$RELEASE_BIN
rm -f $TMP/$RELEASE_TAR

printf "${GREEN}[+]${NORMAL} ${YELLOW}comby${NORMAL} is installed!\n"
printf "${GREEN}[+]${NORMAL} The licenses for this distribution are included in this script. Licenses are also available at https://github.com/comby-tools/comby/tree/master/docs/third-party-licenses\n"
printf "${GREEN}[+]${NORMAL} Running example command:\n"
echo "${YELLOW}------------------------------------------------------------"
printf "${YELLOW}comby${NORMAL} 'printf(\"${GREEN}:[1] :[2]${NORMAL}!\")' 'printf(\"comby, ${GREEN}:[1]${NORMAL}!\")' .c -stdin << EOF\n"
printf "int main(void) {\n"
printf "  printf(\"hello world!\");\n"
printf "}\n"
printf "EOF\n"
echo "${YELLOW}------------------------------------------------------------"
printf "${GREEN}[+]${NORMAL} Output:\n"
echo "${GREEN}------------------------------------------------------------${NORMAL}"
comby 'printf(":[1] :[2]!")' 'printf("comby, :[1]!")' .c -stdin << EOF
int main(void) {
  printf("hello world!");
}
EOF
echo "${GREEN}------------------------------------------------------------${NORMAL}"


# comby license
#
#                                  Apache License
#                            Version 2.0, January 2004
#                         http://www.apache.org/licenses/
# 
#    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
# 
#    1. Definitions.
# 
#       "License" shall mean the terms and conditions for use, reproduction,
#       and distribution as defined by Sections 1 through 9 of this document.
# 
#       "Licensor" shall mean the copyright owner or entity authorized by
#       the copyright owner that is granting the License.
# 
#       "Legal Entity" shall mean the union of the acting entity and all
#       other entities that control, are controlled by, or are under common
#       control with that entity. For the purposes of this definition,
#       "control" means (i) the power, direct or indirect, to cause the
#       direction or management of such entity, whether by contract or
#       otherwise, or (ii) ownership of fifty percent (50%) or more of the
#       outstanding shares, or (iii) beneficial ownership of such entity.
# 
#       "You" (or "Your") shall mean an individual or Legal Entity
#       exercising permissions granted by this License.
# 
#       "Source" form shall mean the preferred form for making modifications,
#       including but not limited to software source code, documentation
#       source, and configuration files.
# 
#       "Object" form shall mean any form resulting from mechanical
#       transformation or translation of a Source form, including but
#       not limited to compiled object code, generated documentation,
#       and conversions to other media types.
# 
#       "Work" shall mean the work of authorship, whether in Source or
#       Object form, made available under the License, as indicated by a
#       copyright notice that is included in or attached to the work
#       (an example is provided in the Appendix below).
# 
#       "Derivative Works" shall mean any work, whether in Source or Object
#       form, that is based on (or derived from) the Work and for which the
#       editorial revisions, annotations, elaborations, or other modifications
#       represent, as a whole, an original work of authorship. For the purposes
#       of this License, Derivative Works shall not include works that refoo
#       separable from, or merely link (or bind by name) to the interfaces of,
#       the Work and Derivative Works thereof.
# 
#       "Contribution" shall mean any work of authorship, including
#       the original version of the Work and any modifications or additions
#       to that Work or Derivative Works thereof, that is intentionally
#       submitted to Licensor for inclusion in the Work by the copyright owner
#       or by an individual or Legal Entity authorized to submit on behalf of
#       the copyright owner. For the purposes of this definition, "submitted"
#       means any form of electronic, verbal, or written communication sent
#       to the Licensor or its representatives, including but not limited to
#       communication on electronic mailing lists, source code control systems,
#       and issue tracking systems that are managed by, or on behalf of, the
#       Licensor for the purpose of discussing and improving the Work, but
#       excluding communication that is conspicuously marked or otherwise
#       designated in writing by the copyright owner as "Not a Contribution."
# 
#       "Contributor" shall mean Licensor and any individual or Legal Entity
#       on behalf of whom a Contribution has been received by Licensor and
#       subsequently incorporated within the Work.
# 
#    2. Grant of Copyright License. Subject to the terms and conditions of
#       this License, each Contributor hereby grants to You a perpetual,
#       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
#       copyright license to reproduce, prepare Derivative Works of,
#       publicly display, publicly perform, sublicense, and distribute the
#       Work and such Derivative Works in Source or Object form.
# 
#    3. Grant of Patent License. Subject to the terms and conditions of
#       this License, each Contributor hereby grants to You a perpetual,
#       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
#       (except as stated in this section) patent license to make, have made,
#       use, offer to sell, sell, import, and otherwise transfer the Work,
#       where such license applies only to those patent claims licensable
#       by such Contributor that are necessarily infringed by their
#       Contribution(s) alone or by combination of their Contribution(s)
#       with the Work to which such Contribution(s) was submitted. If You
#       institute patent litigation against any entity (including a
#       cross-claim or counterclaim in a lawsuit) alleging that the Work
#       or a Contribution incorporated within the Work constitutes direct
#       or contributory patent infringement, then any patent licenses
#       granted to You under this License for that Work shall terminate
#       as of the date such litigation is filed.
# 
#    4. Redistribution. You may reproduce and distribute copies of the
#       Work or Derivative Works thereof in any medium, with or without
#       modifications, and in Source or Object form, provided that You
#       meet the following conditions:
# 
#       (a) You must give any other recipients of the Work or
#           Derivative Works a copy of this License; and
# 
#       (b) You must cause any modified files to carry prominent notices
#           stating that You changed the files; and
# 
#       (c) You must retain, in the Source form of any Derivative Works
#           that You distribute, all copyright, patent, trademark, and
#           attribution notices from the Source form of the Work,
#           excluding those notices that do not pertain to any part of
#           the Derivative Works; and
# 
#       (d) If the Work includes a "NOTICE" text file as part of its
#           distribution, then any Derivative Works that You distribute must
#           include a readable copy of the attribution notices contained
#           within such NOTICE file, excluding those notices that do not
#           pertain to any part of the Derivative Works, in at least one
#           of the following places: within a NOTICE text file distributed
#           as part of the Derivative Works; within the Source form or
#           documentation, if provided along with the Derivative Works; or,
#           within a display generated by the Derivative Works, if and
#           wherever such third-party notices normally appear. The contents
#           of the NOTICE file are for informational purposes only and
#           do not modify the License. You may add Your own attribution
#           notices within Derivative Works that You distribute, alongside
#           or as an addendum to the NOTICE text from the Work, provided
#           that such additional attribution notices cannot be construed
#           as modifying the License.
# 
#       You may add Your own copyright statement to Your modifications and
#       may provide additional or different license terms and conditions
#       for use, reproduction, or distribution of Your modifications, or
#       for any such Derivative Works as a whole, provided Your use,
#       reproduction, and distribution of the Work otherwise complies with
#       the conditions stated in this License.
# 
#    5. Submission of Contributions. Unless You explicitly state otherwise,
#       any Contribution intentionally submitted for inclusion in the Work
#       by You to the Licensor shall be under the terms and conditions of
#       this License, without any additional terms or conditions.
#       Notwithstanding the above, nothing herein shall supersede or modify
#       the terms of any separate license agreement you may have executed
#       with Licensor regarding such Contributions.
# 
#    6. Trademarks. This License does not grant permission to use the trade
#       names, trademarks, service marks, or product names of the Licensor,
#       except as required for reasonable and customary use in describing the
#       origin of the Work and reproducing the content of the NOTICE file.
# 
#    7. Disclaimer of Warranty. Unless required by applicable law or
#       agreed to in writing, Licensor provides the Work (and each
#       Contributor provides its Contributions) on an "AS IS" BASIS,
#       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
#       implied, including, without limitation, any warranties or conditions
#       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
#       PARTICULAR PURPOSE. You are solely responsible for determining the
#       appropriateness of using or redistributing the Work and assume any
#       risks associated with Your exercise of permissions under this License.
# 
#    8. Limitation of Liability. In no event and under no legal theory,
#       whether in tort (including negligence), contract, or otherwise,
#       unless required by applicable law (such as deliberate and grossly
#       negligent acts) or agreed to in writing, shall any Contributor be
#       liable to You for damages, including any direct, indirect, special,
#       incidental, or consequential damages of any character arising as a
#       result of this License or out of the use or inability to use the
#       Work (including but not limited to damages for loss of goodwill,
#       work stoppage, computer failure or malfunction, or any and all
#       other commercial damages or losses), even if such Contributor
#       has been advised of the possibility of such damages.
# 
#    9. Accepting Warranty or Additional Liability. While redistributing
#       the Work or Derivative Works thereof, You may choose to offer,
#       and charge a fee for, acceptance of support, warranty, indemnity,
#       or other liability obligations and/or rights consistent with this
#       License. However, in accepting such obligations, You may act only
#       on Your own behalf and on Your sole responsibility, not on behalf
#       of any other Contributor, and only if You agree to indemnify,
#       defend, and hold each Contributor harmless for any liability
#       incurred by, or claims asserted against, such Contributor by reason
#       of your accepting any such warranty or additional liability.
# 
#    END OF TERMS AND CONDITIONS
# 
#    APPENDIX: How to apply the Apache License to your work.
# 
#       To apply the Apache License to your work, attach the following
#       boilerplate notice, with the fields enclosed by brackets "[]"
#       replaced with your own identifying information. (Don't include
#       the brackets!)  The text should be enclosed in the appropriate
#       comment syntax for the file format. We also recommend that a
#       file or class name and description of purpose be included on the
#       same "printed page" as the copyright notice for easier
#       identification within third-party archives.
# 
#    Copyright 2019 Rijnard van Tonder
# 
#    Licensed under the Apache License, Version 2.0 (the "License");
#    you may not use this file except in compliance with the License.
#    You may obtain a copy of the License at
# 
#        http://www.apache.org/licenses/LICENSE-2.0
# 
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS,
#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#    See the License for the specific language governing permissions and
#    limitations under the License.

# Begin third party licenses

# LICENSE FOR ppx_deriving_yojson:
# 
# Copyright (c) 2014-2018  whitequark <whitequark@whitequark.org>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# 
# LICENSE FOR core:
# 
# The MIT License
# 
# Copyright (c) 2008--2021 Jane Street Group, LLC <opensource@janestreet.com>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# 
# LICENSE FOR ppxlib:
# 
# The MIT License
# 
# Copyright (c) 2018 Jane Street Group, LLC <opensource@janestreet.com>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# 
# LICENSE FOR ppx_deriving:
# 
# Copyright (c) 2014-2016  whitequark <whitequark@whitequark.org>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# 
# LICENSE FOR hack_parallel:
# 
# MIT License
# 
# Copyright (c) 2013-present, Facebook, Inc.
# Modified work Copyright (c) 2018-2019 Rijnard van Tonder
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# 
# LICENSE FOR opium:
# 
# # This file is generated by dune, edit dune-project instead
# opam-version: "2.0"
# synopsis: "OCaml web framework"
# description:
#   "Opium is a web framework for OCaml that provides everything you need to build safe, fast and extensible web applications."
# maintainer: ["Rudi Grinberg <me@rgrinberg.com>"]
# authors: ["Rudi Grinberg" "Anurag Soni" "Thibaut Mattio"]
# license: "MIT"
# homepage: "https://github.com/rgrinberg/opium"
# doc: "https://rgrinberg.github.io/opium/"
# bug-reports: "https://github.com/rgrinberg/opium/issues"
# depends: [
#   "dune" {>= "2.0"}
#   "ocaml" {>= "4.08"}
#   "rock" {= version}
#   "lwt" {>= "5.3.0"}
#   "httpaf-lwt-unix"
#   "logs"
#   "fmt"
#   "mtime"
#   "cmdliner"
#   "ptime"
#   "magic-mime"
#   "yojson"
#   "tyxml"
#   "mirage-crypto"
#   "base64" {>= "3.0.0"}
#   "astring"
#   "re"
#   "uri"
#   "multipart-form-data"
#   "result" {>= "1.5"}
#   "odoc" {with-doc}
#   "alcotest" {with-test}
#   "alcotest-lwt" {with-test}
# ]
# build: [
#   ["dune" "subst"] {pinned}
#   [
#     "dune"
#     "build"
#     "-p"
#     name
#     "-j"
#     jobs
#     "@install"
#     "@runtest" {with-test}
#     "@doc" {with-doc}
#   ]
# ]
# dev-repo: "git+https://github.com/rgrinberg/opium.git"
# 
# LICENSE FOR pcre-ocaml:
# 
# Copyright (c) 1999- Markus Mottl <markus.mottl@gmail.com>
# 
# The Library is distributed under the terms of the GNU Lesser General
# Public License version 2.1 (included below).
# 
# As a special exception to the GNU Lesser General Public License, you
# may link, statically or dynamically, a "work that uses the Library"
# with a publicly distributed version of the Library to produce an
# executable file containing portions of the Library, and distribute that
# executable file under terms of your choice, without any of the additional
# requirements listed in clause 6 of the GNU Lesser General Public License.
# By "a publicly distributed version of the Library", we mean either the
# unmodified Library as distributed by the authors, or a modified version
# of the Library that is distributed under the conditions defined in clause
# 3 of the GNU Lesser General Public License.  This exception does not
# however invalidate any other reasons why the executable file might be
# covered by the GNU Lesser General Public License.
# 
# ---------------------------------------------------------------------------
# 
# ### GNU LESSER GENERAL PUBLIC LICENSE
# 
# Version 2.1, February 1999
# 
#     Copyright (C) 1991, 1999 Free Software Foundation, Inc.
#     51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
#     
#     Everyone is permitted to copy and distribute verbatim copies
#     of this license document, but changing it is not allowed.
# 
#     [This is the first released version of the Lesser GPL.  It also counts
#      as the successor of the GNU Library Public License, version 2, hence
#      the version number 2.1.]
# 
# ### Preamble
# 
# The licenses for most software are designed to take away your freedom
# to share and change it. By contrast, the GNU General Public Licenses
# are intended to guarantee your freedom to share and change free
# software--to make sure the software is free for all its users.
# 
# This license, the Lesser General Public License, applies to some
# specially designated software packages--typically libraries--of the
# Free Software Foundation and other authors who decide to use it. You
# can use it too, but we suggest you first think carefully about whether
# this license or the ordinary General Public License is the better
# strategy to use in any particular case, based on the explanations
# below.
# 
# When we speak of free software, we are referring to freedom of use,
# not price. Our General Public Licenses are designed to make sure that
# you have the freedom to distribute copies of free software (and charge
# for this service if you wish); that you receive source code or can get
# it if you want it; that you can change the software and use pieces of
# it in new free programs; and that you are informed that you can do
# these things.
# 
# To protect your rights, we need to make restrictions that forbid
# distributors to deny you these rights or to ask you to surrender these
# rights. These restrictions translate to certain responsibilities for
# you if you distribute copies of the library or if you modify it.
# 
# For example, if you distribute copies of the library, whether gratis
# or for a fee, you must give the recipients all the rights that we gave
# you. You must make sure that they, too, receive or can get the source
# code. If you link other code with the library, you must provide
# complete object files to the recipients, so that they can relink them
# with the library after making changes to the library and recompiling
# it. And you must show them these terms so they know their rights.
# 
# We protect your rights with a two-step method: (1) we copyright the
# library, and (2) we offer you this license, which gives you legal
# permission to copy, distribute and/or modify the library.
# 
# To protect each distributor, we want to make it very clear that there
# is no warranty for the free library. Also, if the library is modified
# by someone else and passed on, the recipients should know that what
# they have is not the original version, so that the original author's
# reputation will not be affected by problems that might be introduced
# by others.
# 
# Finally, software patents pose a constant threat to the existence of
# any free program. We wish to make sure that a company cannot
# effectively restrict the users of a free program by obtaining a
# restrictive license from a patent holder. Therefore, we insist that
# any patent license obtained for a version of the library must be
# consistent with the full freedom of use specified in this license.
# 
# Most GNU software, including some libraries, is covered by the
# ordinary GNU General Public License. This license, the GNU Lesser
# General Public License, applies to certain designated libraries, and
# is quite different from the ordinary General Public License. We use
# this license for certain libraries in order to permit linking those
# libraries into non-free programs.
# 
# When a program is linked with a library, whether statically or using a
# shared library, the combination of the two is legally speaking a
# combined work, a derivative of the original library. The ordinary
# General Public License therefore permits such linking only if the
# entire combination fits its criteria of freedom. The Lesser General
# Public License permits more lax criteria for linking other code with
# the library.
# 
# We call this license the "Lesser" General Public License because it
# does Less to protect the user's freedom than the ordinary General
# Public License. It also provides other free software developers Less
# of an advantage over competing non-free programs. These disadvantages
# are the reason we use the ordinary General Public License for many
# libraries. However, the Lesser license provides advantages in certain
# special circumstances.
# 
# For example, on rare occasions, there may be a special need to
# encourage the widest possible use of a certain library, so that it
# becomes a de-facto standard. To achieve this, non-free programs must
# be allowed to use the library. A more frequent case is that a free
# library does the same job as widely used non-free libraries. In this
# case, there is little to gain by limiting the free library to free
# software only, so we use the Lesser General Public License.
# 
# In other cases, permission to use a particular library in non-free
# programs enables a greater number of people to use a large body of
# free software. For example, permission to use the GNU C Library in
# non-free programs enables many more people to use the whole GNU
# operating system, as well as its variant, the GNU/Linux operating
# system.
# 
# Although the Lesser General Public License is Less protective of the
# users' freedom, it does ensure that the user of a program that is
# linked with the Library has the freedom and the wherewithal to run
# that program using a modified version of the Library.
# 
# The precise terms and conditions for copying, distribution and
# modification follow. Pay close attention to the difference between a
# "work based on the library" and a "work that uses the library". The
# former contains code derived from the library, whereas the latter must
# be combined with the library in order to run.
# 
# ### TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
# 
# **0.** This License Agreement applies to any software library or other
# program which contains a notice placed by the copyright holder or
# other authorized party saying it may be distributed under the terms of
# this Lesser General Public License (also called "this License"). Each
# licensee is addressed as "you".
# 
# A "library" means a collection of software functions and/or data
# prepared so as to be conveniently linked with application programs
# (which use some of those functions and data) to form executables.
# 
# The "Library", below, refers to any such software library or work
# which has been distributed under these terms. A "work based on the
# Library" means either the Library or any derivative work under
# copyright law: that is to say, a work containing the Library or a
# portion of it, either verbatim or with modifications and/or translated
# straightforwardly into another language. (Hereinafter, translation is
# included without limitation in the term "modification".)
# 
# "Source code" for a work means the preferred form of the work for
# making modifications to it. For a library, complete source code means
# all the source code for all modules it contains, plus any associated
# interface definition files, plus the scripts used to control
# compilation and installation of the library.
# 
# Activities other than copying, distribution and modification are not
# covered by this License; they are outside its scope. The act of
# running a program using the Library is not restricted, and output from
# such a program is covered only if its contents constitute a work based
# on the Library (independent of the use of the Library in a tool for
# writing it). Whether that is true depends on what the Library does and
# what the program that uses the Library does.
# 
# **1.** You may copy and distribute verbatim copies of the Library's
# complete source code as you receive it, in any medium, provided that
# you conspicuously and appropriately publish on each copy an
# appropriate copyright notice and disclaimer of warranty; keep intact
# all the notices that refer to this License and to the absence of any
# warranty; and distribute a copy of this License along with the
# Library.
# 
# You may charge a fee for the physical act of transferring a copy, and
# you may at your option offer warranty protection in exchange for a
# fee.
# 
# **2.** You may modify your copy or copies of the Library or any
# portion of it, thus forming a work based on the Library, and copy and
# distribute such modifications or work under the terms of Section 1
# above, provided that you also meet all of these conditions:
# 
# -   **a)** The modified work must itself be a software library.
# -   **b)** You must cause the files modified to carry prominent
#     notices stating that you changed the files and the date of
#     any change.
# -   **c)** You must cause the whole of the work to be licensed at no
#     charge to all third parties under the terms of this License.
# -   **d)** If a facility in the modified Library refers to a function
#     or a table of data to be supplied by an application program that
#     uses the facility, other than as an argument passed when the
#     facility is invoked, then you must make a good faith effort to
#     ensure that, in the event an application does not supply such
#     function or table, the facility still operates, and performs
#     whatever part of its purpose remains meaningful.
# 
#     (For example, a function in a library to compute square roots has
#     a purpose that is entirely well-defined independent of
#     the application. Therefore, Subsection 2d requires that any
#     application-supplied function or table used by this function must
#     be optional: if the application does not supply it, the square
#     root function must still compute square roots.)
# 
# These requirements apply to the modified work as a whole. If
# identifiable sections of that work are not derived from the Library,
# and can be reasonably considered independent and separate works in
# themselves, then this License, and its terms, do not apply to those
# sections when you distribute them as separate works. But when you
# distribute the same sections as part of a whole which is a work based
# on the Library, the distribution of the whole must be on the terms of
# this License, whose permissions for other licensees extend to the
# entire whole, and thus to each and every part regardless of who wrote
# it.
# 
# Thus, it is not the intent of this section to claim rights or contest
# your rights to work written entirely by you; rather, the intent is to
# exercise the right to control the distribution of derivative or
# collective works based on the Library.
# 
# In addition, mere aggregation of another work not based on the Library
# with the Library (or with a work based on the Library) on a volume of
# a storage or distribution medium does not bring the other work under
# the scope of this License.
# 
# **3.** You may opt to apply the terms of the ordinary GNU General
# Public License instead of this License to a given copy of the Library.
# To do this, you must alter all the notices that refer to this License,
# so that they refer to the ordinary GNU General Public License, version
# 2, instead of to this License. (If a newer version than version 2 of
# the ordinary GNU General Public License has appeared, then you can
# specify that version instead if you wish.) Do not make any other
# change in these notices.
# 
# Once this change is made in a given copy, it is irreversible for that
# copy, so the ordinary GNU General Public License applies to all
# subsequent copies and derivative works made from that copy.
# 
# This option is useful when you wish to copy part of the code of the
# Library into a program that is not a library.
# 
# **4.** You may copy and distribute the Library (or a portion or
# derivative of it, under Section 2) in object code or executable form
# under the terms of Sections 1 and 2 above provided that you accompany
# it with the complete corresponding machine-readable source code, which
# must be distributed under the terms of Sections 1 and 2 above on a
# medium customarily used for software interchange.
# 
# If distribution of object code is made by offering access to copy from
# a designated place, then offering equivalent access to copy the source
# code from the same place satisfies the requirement to distribute the
# source code, even though third parties are not compelled to copy the
# source along with the object code.
# 
# **5.** A program that contains no derivative of any portion of the
# Library, but is designed to work with the Library by being compiled or
# linked with it, is called a "work that uses the Library". Such a work,
# in isolation, is not a derivative work of the Library, and therefore
# falls outside the scope of this License.
# 
# However, linking a "work that uses the Library" with the Library
# creates an executable that is a derivative of the Library (because it
# contains portions of the Library), rather than a "work that uses the
# library". The executable is therefore covered by this License. Section
# 6 states terms for distribution of such executables.
# 
# When a "work that uses the Library" uses material from a header file
# that is part of the Library, the object code for the work may be a
# derivative work of the Library even though the source code is not.
# Whether this is true is especially significant if the work can be
# linked without the Library, or if the work is itself a library. The
# threshold for this to be true is not precisely defined by law.
# 
# If such an object file uses only numerical parameters, data structure
# layouts and accessors, and small macros and small inline functions
# (ten lines or less in length), then the use of the object file is
# unrestricted, regardless of whether it is legally a derivative work.
# (Executables containing this object code plus portions of the Library
# will still fall under Section 6.)
# 
# Otherwise, if the work is a derivative of the Library, you may
# distribute the object code for the work under the terms of Section 6.
# Any executables containing that work also fall under Section 6,
# whether or not they are linked directly with the Library itself.
# 
# **6.** As an exception to the Sections above, you may also combine or
# link a "work that uses the Library" with the Library to produce a work
# containing portions of the Library, and distribute that work under
# terms of your choice, provided that the terms permit modification of
# the work for the customer's own use and reverse engineering for
# debugging such modifications.
# 
# You must give prominent notice with each copy of the work that the
# Library is used in it and that the Library and its use are covered by
# this License. You must supply a copy of this License. If the work
# during execution displays copyright notices, you must include the
# copyright notice for the Library among them, as well as a reference
# directing the user to the copy of this License. Also, you must do one
# of these things:
# 
# -   **a)** Accompany the work with the complete corresponding
#     machine-readable source code for the Library including whatever
#     changes were used in the work (which must be distributed under
#     Sections 1 and 2 above); and, if the work is an executable linked
#     with the Library, with the complete machine-readable "work that
#     uses the Library", as object code and/or source code, so that the
#     user can modify the Library and then relink to produce a modified
#     executable containing the modified Library. (It is understood that
#     the user who changes the contents of definitions files in the
#     Library will not necessarily be able to recompile the application
#     to use the modified definitions.)
# -   **b)** Use a suitable shared library mechanism for linking with
#     the Library. A suitable mechanism is one that (1) uses at run time
#     a copy of the library already present on the user's computer
#     system, rather than copying library functions into the executable,
#     and (2) will operate properly with a modified version of the
#     library, if the user installs one, as long as the modified version
#     is interface-compatible with the version that the work was
#     made with.
# -   **c)** Accompany the work with a written offer, valid for at least
#     three years, to give the same user the materials specified in
#     Subsection 6a, above, for a charge no more than the cost of
#     performing this distribution.
# -   **d)** If distribution of the work is made by offering access to
#     copy from a designated place, offer equivalent access to copy the
#     above specified materials from the same place.
# -   **e)** Verify that the user has already received a copy of these
#     materials or that you have already sent this user a copy.
# 
# For an executable, the required form of the "work that uses the
# Library" must include any data and utility programs needed for
# reproducing the executable from it. However, as a special exception,
# the materials to be distributed need not include anything that is
# normally distributed (in either source or binary form) with the major
# components (compiler, kernel, and so on) of the operating system on
# which the executable runs, unless that component itself accompanies
# the executable.
# 
# It may happen that this requirement contradicts the license
# restrictions of other proprietary libraries that do not normally
# accompany the operating system. Such a contradiction means you cannot
# use both them and the Library together in an executable that you
# distribute.
# 
# **7.** You may place library facilities that are a work based on the
# Library side-by-side in a single library together with other library
# facilities not covered by this License, and distribute such a combined
# library, provided that the separate distribution of the work based on
# the Library and of the other library facilities is otherwise
# permitted, and provided that you do these two things:
# 
# -   **a)** Accompany the combined library with a copy of the same work
#     based on the Library, uncombined with any other
#     library facilities. This must be distributed under the terms of
#     the Sections above.
# -   **b)** Give prominent notice with the combined library of the fact
#     that part of it is a work based on the Library, and explaining
#     where to find the accompanying uncombined form of the same work.
# 
# **8.** You may not copy, modify, sublicense, link with, or distribute
# the Library except as expressly provided under this License. Any
# attempt otherwise to copy, modify, sublicense, link with, or
# distribute the Library is void, and will automatically terminate your
# rights under this License. However, parties who have received copies,
# or rights, from you under this License will not have their licenses
# terminated so long as such parties remain in full compliance.
# 
# **9.** You are not required to accept this License, since you have not
# signed it. However, nothing else grants you permission to modify or
# distribute the Library or its derivative works. These actions are
# prohibited by law if you do not accept this License. Therefore, by
# modifying or distributing the Library (or any work based on the
# Library), you indicate your acceptance of this License to do so, and
# all its terms and conditions for copying, distributing or modifying
# the Library or works based on it.
# 
# **10.** Each time you redistribute the Library (or any work based on
# the Library), the recipient automatically receives a license from the
# original licensor to copy, distribute, link with or modify the Library
# subject to these terms and conditions. You may not impose any further
# restrictions on the recipients' exercise of the rights granted herein.
# You are not responsible for enforcing compliance by third parties with
# this License.
# 
# **11.** If, as a consequence of a court judgment or allegation of
# patent infringement or for any other reason (not limited to patent
# issues), conditions are imposed on you (whether by court order,
# agreement or otherwise) that contradict the conditions of this
# License, they do not excuse you from the conditions of this License.
# If you cannot distribute so as to satisfy simultaneously your
# obligations under this License and any other pertinent obligations,
# then as a consequence you may not distribute the Library at all. For
# example, if a patent license would not permit royalty-free
# redistribution of the Library by all those who receive copies directly
# or indirectly through you, then the only way you could satisfy both it
# and this License would be to refrain entirely from distribution of the
# Library.
# 
# If any portion of this section is held invalid or unenforceable under
# any particular circumstance, the balance of the section is intended to
# apply, and the section as a whole is intended to apply in other
# circumstances.
# 
# It is not the purpose of this section to induce you to infringe any
# patents or other property right claims or to contest validity of any
# such claims; this section has the sole purpose of protecting the
# integrity of the free software distribution system which is
# implemented by public license practices. Many people have made
# generous contributions to the wide range of software distributed
# through that system in reliance on consistent application of that
# system; it is up to the author/donor to decide if he or she is willing
# to distribute software through any other system and a licensee cannot
# impose that choice.
# 
# This section is intended to make thoroughly clear what is believed to
# be a consequence of the rest of this License.
# 
# **12.** If the distribution and/or use of the Library is restricted in
# certain countries either by patents or by copyrighted interfaces, the
# original copyright holder who places the Library under this License
# may add an explicit geographical distribution limitation excluding
# those countries, so that distribution is permitted only in or among
# countries not thus excluded. In such case, this License incorporates
# the limitation as if written in the body of this License.
# 
# **13.** The Free Software Foundation may publish revised and/or new
# versions of the Lesser General Public License from time to time. Such
# new versions will be similar in spirit to the present version, but may
# differ in detail to address new problems or concerns.
# 
# Each version is given a distinguishing version number. If the Library
# specifies a version number of this License which applies to it and
# "any later version", you have the option of following the terms and
# conditions either of that version or of any later version published by
# the Free Software Foundation. If the Library does not specify a
# license version number, you may choose any version ever published by
# the Free Software Foundation.
# 
# **14.** If you wish to incorporate parts of the Library into other
# free programs whose distribution conditions are incompatible with
# these, write to the author to ask for permission. For software which
# is copyrighted by the Free Software Foundation, write to the Free
# Software Foundation; we sometimes make exceptions for this. Our
# decision will be guided by the two goals of preserving the free status
# of all derivatives of our free software and of promoting the sharing
# and reuse of software generally.
# 
# **NO WARRANTY**
# 
# **15.** BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
# WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
# EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
# OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
# KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
# LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
# THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
# 
# **16.** IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
# WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
# AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
# FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
# CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
# LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
# RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
# FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
# SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
# DAMAGES.
# 
# ### END OF TERMS AND CONDITIONS
# 
# ### How to Apply These Terms to Your New Libraries
# 
# If you develop a new library, and you want it to be of the greatest
# possible use to the public, we recommend making it free software that
# everyone can redistribute and change. You can do so by permitting
# redistribution under these terms (or, alternatively, under the terms
# of the ordinary General Public License).
# 
# To apply these terms, attach the following notices to the library. It
# is safest to attach them to the start of each source file to most
# effectively convey the exclusion of warranty; and each file should
# have at least the "copyright" line and a pointer to where the full
# notice is found.
# 
#     one line to give the library's name and an idea of what it does.
#     Copyright (C) year  name of author
# 
#     This library is free software; you can redistribute it and/or
#     modify it under the terms of the GNU Lesser General Public
#     License as published by the Free Software Foundation; either
#     version 2.1 of the License, or (at your option) any later version.
# 
#     This library is distributed in the hope that it will be useful,
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#     Lesser General Public License for more details.
# 
#     You should have received a copy of the GNU Lesser General Public
#     License along with this library; if not, write to the Free Software
#     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
# 
# Also add information on how to contact you by electronic and paper
# mail.
# 
# You should also get your employer (if you work as a programmer) or
# your school, if any, to sign a "copyright disclaimer" for the library,
# if necessary. Here is a sample; alter the names:
# 
#     Yoyodyne, Inc., hereby disclaims all copyright interest in
#     the library `Frob' (a library for tweaking knobs) written
#     by James Random Hacker.
# 
#     signature of Ty Coon, 1 April 1990
#     Ty Coon, President of Vice
# 
# That's all there is to it!
# 
# LICENSE FOR ocaml-tls:
# 
# Copyright (c) 2014, David Kaloper and Hannes Mehnert
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
# 
# * Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.
# 
# * Redistributions in binary form must reproduce the above copyright notice, this
#   list of conditions and the following disclaimer in the documentation and/or
#   other materials provided with the distribution.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# LICENSE FOR camlzip:
# 
# This Library is distributed under the terms of the GNU Lesser General
# Public License (LGPL) version 2.1 or above (included below).
# 
# As a special exception to the GNU Lesser General Public License, you
# may link, statically or dynamically, a "work that uses the Library"
# with a publicly distributed version of the Library to produce an
# executable file containing portions of the Library, and distribute
# that executable file under terms of your choice, without any of the
# additional requirements listed in clause 6 of the GNU Lesser General
# Public License.  By "a publicly distributed version of the Library",
# we mean either the unmodified Library as distributed by INRIA, or a
# modified version of the Library that is distributed under the
# conditions defined in clause 3 of the GNU Lesser General Public
# License.  This exception does not however invalidate any other reasons
# why the executable file might be covered by the GNU Lesser General
# Public License.
# 
# ----------------------------------------------------------------------
# 
#                    GNU LESSER GENERAL PUBLIC LICENSE
#                        Version 2.1, February 1999
# 
#  Copyright (C) 1991, 1999 Free Software Foundation, Inc.
#  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
#  Everyone is permitted to copy and distribute verbatim copies
#  of this license document, but changing it is not allowed.
# 
# [This is the first released version of the Lesser GPL.  It also counts
#  as the successor of the GNU Library Public License, version 2, hence
#  the version number 2.1.]
# 
#                             Preamble
# 
#   The licenses for most software are designed to take away your
# freedom to share and change it.  By contrast, the GNU General Public
# Licenses are intended to guarantee your freedom to share and change
# free software--to make sure the software is free for all its users.
# 
#   This license, the Lesser General Public License, applies to some
# specially designated software packages--typically libraries--of the
# Free Software Foundation and other authors who decide to use it.  You
# can use it too, but we suggest you first think carefully about whether
# this license or the ordinary General Public License is the better
# strategy to use in any particular case, based on the explanations below.
# 
#   When we speak of free software, we are referring to freedom of use,
# not price.  Our General Public Licenses are designed to make sure that
# you have the freedom to distribute copies of free software (and charge
# for this service if you wish); that you receive source code or can get
# it if you want it; that you can change the software and use pieces of
# it in new free programs; and that you are informed that you can do
# these things.
# 
#   To protect your rights, we need to make restrictions that forbid
# distributors to deny you these rights or to ask you to surrender these
# rights.  These restrictions translate to certain responsibilities for
# you if you distribute copies of the library or if you modify it.
# 
#   For example, if you distribute copies of the library, whether gratis
# or for a fee, you must give the recipients all the rights that we gave
# you.  You must make sure that they, too, receive or can get the source
# code.  If you link other code with the library, you must provide
# complete object files to the recipients, so that they can relink them
# with the library after making changes to the library and recompiling
# it.  And you must show them these terms so they know their rights.
# 
#   We protect your rights with a two-step method: (1) we copyright the
# library, and (2) we offer you this license, which gives you legal
# permission to copy, distribute and/or modify the library.
# 
#   To protect each distributor, we want to make it very clear that
# there is no warranty for the free library.  Also, if the library is
# modified by someone else and passed on, the recipients should know
# that what they have is not the original version, so that the original
# author's reputation will not be affected by problems that might be
# introduced by others.
# 
#   Finally, software patents pose a constant threat to the existence of
# any free program.  We wish to make sure that a company cannot
# effectively restrict the users of a free program by obtaining a
# restrictive license from a patent holder.  Therefore, we insist that
# any patent license obtained for a version of the library must be
# consistent with the full freedom of use specified in this license.
# 
#   Most GNU software, including some libraries, is covered by the
# ordinary GNU General Public License.  This license, the GNU Lesser
# General Public License, applies to certain designated libraries, and
# is quite different from the ordinary General Public License.  We use
# this license for certain libraries in order to permit linking those
# libraries into non-free programs.
# 
#   When a program is linked with a library, whether statically or using
# a shared library, the combination of the two is legally speaking a
# combined work, a derivative of the original library.  The ordinary
# General Public License therefore permits such linking only if the
# entire combination fits its criteria of freedom.  The Lesser General
# Public License permits more lax criteria for linking other code with
# the library.
# 
#   We call this license the "Lesser" General Public License because it
# does Less to protect the user's freedom than the ordinary General
# Public License.  It also provides other free software developers Less
# of an advantage over competing non-free programs.  These disadvantages
# are the reason we use the ordinary General Public License for many
# libraries.  However, the Lesser license provides advantages in certain
# special circumstances.
# 
#   For example, on rare occasions, there may be a special need to
# encourage the widest possible use of a certain library, so that it becomes
# a de-facto standard.  To achieve this, non-free programs must be
# allowed to use the library.  A more frequent case is that a free
# library does the same job as widely used non-free libraries.  In this
# case, there is little to gain by limiting the free library to free
# software only, so we use the Lesser General Public License.
# 
#   In other cases, permission to use a particular library in non-free
# programs enables a greater number of people to use a large body of
# free software.  For example, permission to use the GNU C Library in
# non-free programs enables many more people to use the whole GNU
# operating system, as well as its variant, the GNU/Linux operating
# system.
# 
#   Although the Lesser General Public License is Less protective of the
# users' freedom, it does ensure that the user of a program that is
# linked with the Library has the freedom and the wherewithal to run
# that program using a modified version of the Library.
# 
#   The precise terms and conditions for copying, distribution and
# modification follow.  Pay close attention to the difference between a
# "work based on the library" and a "work that uses the library".  The
# former contains code derived from the library, whereas the latter must
# be combined with the library in order to run.
# 
#                   GNU LESSER GENERAL PUBLIC LICENSE
#    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
# 
#   0. This License Agreement applies to any software library or other
# program which contains a notice placed by the copyright holder or
# other authorized party saying it may be distributed under the terms of
# this Lesser General Public License (also called "this License").
# Each licensee is addressed as "you".
# 
#   A "library" means a collection of software functions and/or data
# prepared so as to be conveniently linked with application programs
# (which use some of those functions and data) to form executables.
# 
#   The "Library", below, refers to any such software library or work
# which has been distributed under these terms.  A "work based on the
# Library" means either the Library or any derivative work under
# copyright law: that is to say, a work containing the Library or a
# portion of it, either verbatim or with modifications and/or translated
# straightforwardly into another language.  (Hereinafter, translation is
# included without limitation in the term "modification".)
# 
#   "Source code" for a work means the preferred form of the work for
# making modifications to it.  For a library, complete source code means
# all the source code for all modules it contains, plus any associated
# interface definition files, plus the scripts used to control compilation
# and installation of the library.
# 
#   Activities other than copying, distribution and modification are not
# covered by this License; they are outside its scope.  The act of
# running a program using the Library is not restricted, and output from
# such a program is covered only if its contents constitute a work based
# on the Library (independent of the use of the Library in a tool for
# writing it).  Whether that is true depends on what the Library does
# and what the program that uses the Library does.
#   
#   1. You may copy and distribute verbatim copies of the Library's
# complete source code as you receive it, in any medium, provided that
# you conspicuously and appropriately publish on each copy an
# appropriate copyright notice and disclaimer of warranty; keep intact
# all the notices that refer to this License and to the absence of any
# warranty; and distribute a copy of this License along with the
# Library.
# 
#   You may charge a fee for the physical act of transferring a copy,
# and you may at your option offer warranty protection in exchange for a
# fee.
# 
#   2. You may modify your copy or copies of the Library or any portion
# of it, thus forming a work based on the Library, and copy and
# distribute such modifications or work under the terms of Section 1
# above, provided that you also meet all of these conditions:
# 
#     a) The modified work must itself be a software library.
# 
#     b) You must cause the files modified to carry prominent notices
#     stating that you changed the files and the date of any change.
# 
#     c) You must cause the whole of the work to be licensed at no
#     charge to all third parties under the terms of this License.
# 
#     d) If a facility in the modified Library refers to a function or a
#     table of data to be supplied by an application program that uses
#     the facility, other than as an argument passed when the facility
#     is invoked, then you must make a good faith effort to ensure that,
#     in the event an application does not supply such function or
#     table, the facility still operates, and performs whatever part of
#     its purpose remains meaningful.
# 
#     (For example, a function in a library to compute square roots has
#     a purpose that is entirely well-defined independent of the
#     application.  Therefore, Subsection 2d requires that any
#     application-supplied function or table used by this function must
#     be optional: if the application does not supply it, the square
#     root function must still compute square roots.)
# 
# These requirements apply to the modified work as a whole.  If
# identifiable sections of that work are not derived from the Library,
# and can be reasonably considered independent and separate works in
# themselves, then this License, and its terms, do not apply to those
# sections when you distribute them as separate works.  But when you
# distribute the same sections as part of a whole which is a work based
# on the Library, the distribution of the whole must be on the terms of
# this License, whose permissions for other licensees extend to the
# entire whole, and thus to each and every part regardless of who wrote
# it.
# 
# Thus, it is not the intent of this section to claim rights or contest
# your rights to work written entirely by you; rather, the intent is to
# exercise the right to control the distribution of derivative or
# collective works based on the Library.
# 
# In addition, mere aggregation of another work not based on the Library
# with the Library (or with a work based on the Library) on a volume of
# a storage or distribution medium does not bring the other work under
# the scope of this License.
# 
#   3. You may opt to apply the terms of the ordinary GNU General Public
# License instead of this License to a given copy of the Library.  To do
# this, you must alter all the notices that refer to this License, so
# that they refer to the ordinary GNU General Public License, version 2,
# instead of to this License.  (If a newer version than version 2 of the
# ordinary GNU General Public License has appeared, then you can specify
# that version instead if you wish.)  Do not make any other change in
# these notices.
# 
#   Once this change is made in a given copy, it is irreversible for
# that copy, so the ordinary GNU General Public License applies to all
# subsequent copies and derivative works made from that copy.
# 
#   This option is useful when you wish to copy part of the code of
# the Library into a program that is not a library.
# 
#   4. You may copy and distribute the Library (or a portion or
# derivative of it, under Section 2) in object code or executable form
# under the terms of Sections 1 and 2 above provided that you accompany
# it with the complete corresponding machine-readable source code, which
# must be distributed under the terms of Sections 1 and 2 above on a
# medium customarily used for software interchange.
# 
#   If distribution of object code is made by offering access to copy
# from a designated place, then offering equivalent access to copy the
# source code from the same place satisfies the requirement to
# distribute the source code, even though third parties are not
# compelled to copy the source along with the object code.
# 
#   5. A program that contains no derivative of any portion of the
# Library, but is designed to work with the Library by being compiled or
# linked with it, is called a "work that uses the Library".  Such a
# work, in isolation, is not a derivative work of the Library, and
# therefore falls outside the scope of this License.
# 
#   However, linking a "work that uses the Library" with the Library
# creates an executable that is a derivative of the Library (because it
# contains portions of the Library), rather than a "work that uses the
# library".  The executable is therefore covered by this License.
# Section 6 states terms for distribution of such executables.
# 
#   When a "work that uses the Library" uses material from a header file
# that is part of the Library, the object code for the work may be a
# derivative work of the Library even though the source code is not.
# Whether this is true is especially significant if the work can be
# linked without the Library, or if the work is itself a library.  The
# threshold for this to be true is not precisely defined by law.
# 
#   If such an object file uses only numerical parameters, data
# structure layouts and accessors, and small macros and small inline
# functions (ten lines or less in length), then the use of the object
# file is unrestricted, regardless of whether it is legally a derivative
# work.  (Executables containing this object code plus portions of the
# Library will still fall under Section 6.)
# 
#   Otherwise, if the work is a derivative of the Library, you may
# distribute the object code for the work under the terms of Section 6.
# Any executables containing that work also fall under Section 6,
# whether or not they are linked directly with the Library itself.
# 
#   6. As an exception to the Sections above, you may also combine or
# link a "work that uses the Library" with the Library to produce a
# work containing portions of the Library, and distribute that work
# under terms of your choice, provided that the terms permit
# modification of the work for the customer's own use and reverse
# engineering for debugging such modifications.
# 
#   You must give prominent notice with each copy of the work that the
# Library is used in it and that the Library and its use are covered by
# this License.  You must supply a copy of this License.  If the work
# during execution displays copyright notices, you must include the
# copyright notice for the Library among them, as well as a reference
# directing the user to the copy of this License.  Also, you must do one
# of these things:
# 
#     a) Accompany the work with the complete corresponding
#     machine-readable source code for the Library including whatever
#     changes were used in the work (which must be distributed under
#     Sections 1 and 2 above); and, if the work is an executable linked
#     with the Library, with the complete machine-readable "work that
#     uses the Library", as object code and/or source code, so that the
#     user can modify the Library and then relink to produce a modified
#     executable containing the modified Library.  (It is understood
#     that the user who changes the contents of definitions files in the
#     Library will not necessarily be able to recompile the application
#     to use the modified definitions.)
# 
#     b) Use a suitable shared library mechanism for linking with the
#     Library.  A suitable mechanism is one that (1) uses at run time a
#     copy of the library already present on the user's computer system,
#     rather than copying library functions into the executable, and (2)
#     will operate properly with a modified version of the library, if
#     the user installs one, as long as the modified version is
#     interface-compatible with the version that the work was made with.
# 
#     c) Accompany the work with a written offer, valid for at
#     least three years, to give the same user the materials
#     specified in Subsection 6a, above, for a charge no more
#     than the cost of performing this distribution.
# 
#     d) If distribution of the work is made by offering access to copy
#     from a designated place, offer equivalent access to copy the above
#     specified materials from the same place.
# 
#     e) Verify that the user has already received a copy of these
#     materials or that you have already sent this user a copy.
# 
#   For an executable, the required form of the "work that uses the
# Library" must include any data and utility programs needed for
# reproducing the executable from it.  However, as a special exception,
# the materials to be distributed need not include anything that is
# normally distributed (in either source or binary form) with the major
# components (compiler, kernel, and so on) of the operating system on
# which the executable runs, unless that component itself accompanies
# the executable.
# 
#   It may happen that this requirement contradicts the license
# restrictions of other proprietary libraries that do not normally
# accompany the operating system.  Such a contradiction means you cannot
# use both them and the Library together in an executable that you
# distribute.
# 
#   7. You may place library facilities that are a work based on the
# Library side-by-side in a single library together with other library
# facilities not covered by this License, and distribute such a combined
# library, provided that the separate distribution of the work based on
# the Library and of the other library facilities is otherwise
# permitted, and provided that you do these two things:
# 
#     a) Accompany the combined library with a copy of the same work
#     based on the Library, uncombined with any other library
#     facilities.  This must be distributed under the terms of the
#     Sections above.
# 
#     b) Give prominent notice with the combined library of the fact
#     that part of it is a work based on the Library, and explaining
#     where to find the accompanying uncombined form of the same work.
# 
#   8. You may not copy, modify, sublicense, link with, or distribute
# the Library except as expressly provided under this License.  Any
# attempt otherwise to copy, modify, sublicense, link with, or
# distribute the Library is void, and will automatically terminate your
# rights under this License.  However, parties who have received copies,
# or rights, from you under this License will not have their licenses
# terminated so long as such parties remain in full compliance.
# 
#   9. You are not required to accept this License, since you have not
# signed it.  However, nothing else grants you permission to modify or
# distribute the Library or its derivative works.  These actions are
# prohibited by law if you do not accept this License.  Therefore, by
# modifying or distributing the Library (or any work based on the
# Library), you indicate your acceptance of this License to do so, and
# all its terms and conditions for copying, distributing or modifying
# the Library or works based on it.
# 
#   10. Each time you redistribute the Library (or any work based on the
# Library), the recipient automatically receives a license from the
# original licensor to copy, distribute, link with or modify the Library
# subject to these terms and conditions.  You may not impose any further
# restrictions on the recipients' exercise of the rights granted herein.
# You are not responsible for enforcing compliance by third parties with
# this License.
# 
#   11. If, as a consequence of a court judgment or allegation of patent
# infringement or for any other reason (not limited to patent issues),
# conditions are imposed on you (whether by court order, agreement or
# otherwise) that contradict the conditions of this License, they do not
# excuse you from the conditions of this License.  If you cannot
# distribute so as to satisfy simultaneously your obligations under this
# License and any other pertinent obligations, then as a consequence you
# may not distribute the Library at all.  For example, if a patent
# license would not permit royalty-free redistribution of the Library by
# all those who receive copies directly or indirectly through you, then
# the only way you could satisfy both it and this License would be to
# refrain entirely from distribution of the Library.
# 
# If any portion of this section is held invalid or unenforceable under any
# particular circumstance, the balance of the section is intended to apply,
# and the section as a whole is intended to apply in other circumstances.
# 
# It is not the purpose of this section to induce you to infringe any
# patents or other property right claims or to contest validity of any
# such claims; this section has the sole purpose of protecting the
# integrity of the free software distribution system which is
# implemented by public license practices.  Many people have made
# generous contributions to the wide range of software distributed
# through that system in reliance on consistent application of that
# system; it is up to the author/donor to decide if he or she is willing
# to distribute software through any other system and a licensee cannot
# impose that choice.
# 
# This section is intended to make thoroughly clear what is believed to
# be a consequence of the rest of this License.
# 
#   12. If the distribution and/or use of the Library is restricted in
# certain countries either by patents or by copyrighted interfaces, the
# original copyright holder who places the Library under this License may add
# an explicit geographical distribution limitation excluding those countries,
# so that distribution is permitted only in or among countries not thus
# excluded.  In such case, this License incorporates the limitation as if
# written in the body of this License.
# 
#   13. The Free Software Foundation may publish revised and/or new
# versions of the Lesser General Public License from time to time.
# Such new versions will be similar in spirit to the present version,
# but may differ in detail to address new problems or concerns.
# 
# Each version is given a distinguishing version number.  If the Library
# specifies a version number of this License which applies to it and
# "any later version", you have the option of following the terms and
# conditions either of that version or of any later version published by
# the Free Software Foundation.  If the Library does not specify a
# license version number, you may choose any version ever published by
# the Free Software Foundation.
# 
#   14. If you wish to incorporate parts of the Library into other free
# programs whose distribution conditions are incompatible with these,
# write to the author to ask for permission.  For software which is
# copyrighted by the Free Software Foundation, write to the Free
# Software Foundation; we sometimes make exceptions for this.  Our
# decision will be guided by the two goals of preserving the free status
# of all derivatives of our free software and of promoting the sharing
# and reuse of software generally.
# 
#                             NO WARRANTY
# 
#   15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
# WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
# EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
# OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
# KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
# LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
# THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
# 
#   16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
# WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
# AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
# FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
# CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
# LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
# RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
# FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
# SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
# DAMAGES.
# 
#                      END OF TERMS AND CONDITIONS
# 
#            How to Apply These Terms to Your New Libraries
# 
#   If you develop a new library, and you want it to be of the greatest
# possible use to the public, we recommend making it free software that
# everyone can redistribute and change.  You can do so by permitting
# redistribution under these terms (or, alternatively, under the terms of the
# ordinary General Public License).
# 
#   To apply these terms, attach the following notices to the library.  It is
# safest to attach them to the start of each source file to most effectively
# convey the exclusion of warranty; and each file should have at least the
# "copyright" line and a pointer to where the full notice is found.
# 
#     <one line to give the library's name and a brief idea of what it does.>
#     Copyright (C) <year>  <name of author>
# 
#     This library is free software; you can redistribute it and/or
#     modify it under the terms of the GNU Lesser General Public
#     License as published by the Free Software Foundation; either
#     version 2.1 of the License, or (at your option) any later version.
# 
#     This library is distributed in the hope that it will be useful,
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#     Lesser General Public License for more details.
# 
#     You should have received a copy of the GNU Lesser General Public
#     License along with this library; if not, write to the Free Software
#     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
# 
# Also add information on how to contact you by electronic and paper mail.
# 
# You should also get your employer (if you work as a programmer) or your
# school, if any, to sign a "copyright disclaimer" for the library, if
# necessary.  Here is a sample; alter the names:
# 
#   Yoyodyne, Inc., hereby disclaims all copyright interest in the
#   library `Frob' (a library for tweaking knobs) written by James Random Hacker.
# 
#   <signature of Ty Coon>, 1 April 1990
#   Ty Coon, President of Vice
# 
# That's all there is to it!
# 
# LICENSE FOR bisect_ppx:
# 
# Copyright © 2008-2021 Xavier Clerc, Leonid Rozenberg, Anton Bachin
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the “Software”), to deal in
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
# of the Software, and to permit persons to whom the Software is furnished to do
# so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# 
# LICENSE FOR mparser:
# 
# This library is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License (LGPL) as
# published by the Free Software Foundation; either version 2.1 of the
# License (see below), or (at your option) any later version.
# 
# As a special exception to the GNU Lesser General Public License, you
# may link, statically or dynamically, a "work that uses the Library"
# with a publicly distributed version of the Library to produce an
# executable file containing portions of the Library, and distribute
# that executable file under terms of your choice, without any of the
# additional requirements listed in clause 6 of the GNU Lesser General
# Public License. By "a publicly distributed version of the Library", we
# mean either the unmodified Library as distributed, or a modified
# version of the Library that is distributed under the conditions
# defined in clause 2 of the GNU Lesser General Public License. This
# exception does not however invalidate any other reasons why the
# executable file might be covered by the GNU Lesser General Public
# License.
# 
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# 
# ======================================================================
# 
# 
#                   GNU LESSER GENERAL PUBLIC LICENSE
#                        Version 2.1, February 1999
# 
#  Copyright (C) 1991, 1999 Free Software Foundation, Inc.
#  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
#  Everyone is permitted to copy and distribute verbatim copies
#  of this license document, but changing it is not allowed.
# 
# [This is the first released version of the Lesser GPL.  It also counts
#  as the successor of the GNU Library Public License, version 2, hence
#  the version number 2.1.]
# 
#                             Preamble
# 
#   The licenses for most software are designed to take away your
# freedom to share and change it.  By contrast, the GNU General Public
# Licenses are intended to guarantee your freedom to share and change
# free software--to make sure the software is free for all its users.
# 
#   This license, the Lesser General Public License, applies to some
# specially designated software packages--typically libraries--of the
# Free Software Foundation and other authors who decide to use it.  You
# can use it too, but we suggest you first think carefully about whether
# this license or the ordinary General Public License is the better
# strategy to use in any particular case, based on the explanations below.
# 
#   When we speak of free software, we are referring to freedom of use,
# not price.  Our General Public Licenses are designed to make sure that
# you have the freedom to distribute copies of free software (and charge
# for this service if you wish); that you receive source code or can get
# it if you want it; that you can change the software and use pieces of
# it in new free programs; and that you are informed that you can do
# these things.
# 
#   To protect your rights, we need to make restrictions that forbid
# distributors to deny you these rights or to ask you to surrender these
# rights.  These restrictions translate to certain responsibilities for
# you if you distribute copies of the library or if you modify it.
# 
#   For example, if you distribute copies of the library, whether gratis
# or for a fee, you must give the recipients all the rights that we gave
# you.  You must make sure that they, too, receive or can get the source
# code.  If you link other code with the library, you must provide
# complete object files to the recipients, so that they can relink them
# with the library after making changes to the library and recompiling
# it.  And you must show them these terms so they know their rights.
# 
#   We protect your rights with a two-step method: (1) we copyright the
# library, and (2) we offer you this license, which gives you legal
# permission to copy, distribute and/or modify the library.
# 
#   To protect each distributor, we want to make it very clear that
# there is no warranty for the free library.  Also, if the library is
# modified by someone else and passed on, the recipients should know
# that what they have is not the original version, so that the original
# author's reputation will not be affected by problems that might be
# introduced by others.
# 
#   Finally, software patents pose a constant threat to the existence of
# any free program.  We wish to make sure that a company cannot
# effectively restrict the users of a free program by obtaining a
# restrictive license from a patent holder.  Therefore, we insist that
# any patent license obtained for a version of the library must be
# consistent with the full freedom of use specified in this license.
# 
#   Most GNU software, including some libraries, is covered by the
# ordinary GNU General Public License.  This license, the GNU Lesser
# General Public License, applies to certain designated libraries, and
# is quite different from the ordinary General Public License.  We use
# this license for certain libraries in order to permit linking those
# libraries into non-free programs.
# 
#   When a program is linked with a library, whether statically or using
# a shared library, the combination of the two is legally speaking a
# combined work, a derivative of the original library.  The ordinary
# General Public License therefore permits such linking only if the
# entire combination fits its criteria of freedom.  The Lesser General
# Public License permits more lax criteria for linking other code with
# the library.
# 
#   We call this license the "Lesser" General Public License because it
# does Less to protect the user's freedom than the ordinary General
# Public License.  It also provides other free software developers Less
# of an advantage over competing non-free programs.  These disadvantages
# are the reason we use the ordinary General Public License for many
# libraries.  However, the Lesser license provides advantages in certain
# special circumstances.
# 
#   For example, on rare occasions, there may be a special need to
# encourage the widest possible use of a certain library, so that it becomes
# a de-facto standard.  To achieve this, non-free programs must be
# allowed to use the library.  A more frequent case is that a free
# library does the same job as widely used non-free libraries.  In this
# case, there is little to gain by limiting the free library to free
# software only, so we use the Lesser General Public License.
# 
#   In other cases, permission to use a particular library in non-free
# programs enables a greater number of people to use a large body of
# free software.  For example, permission to use the GNU C Library in
# non-free programs enables many more people to use the whole GNU
# operating system, as well as its variant, the GNU/Linux operating
# system.
# 
#   Although the Lesser General Public License is Less protective of the
# users' freedom, it does ensure that the user of a program that is
# linked with the Library has the freedom and the wherewithal to run
# that program using a modified version of the Library.
# 
#   The precise terms and conditions for copying, distribution and
# modification follow.  Pay close attention to the difference between a
# "work based on the library" and a "work that uses the library".  The
# former contains code derived from the library, whereas the latter must
# be combined with the library in order to run.
# 
#                   GNU LESSER GENERAL PUBLIC LICENSE
#    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
# 
#   0. This License Agreement applies to any software library or other
# program which contains a notice placed by the copyright holder or
# other authorized party saying it may be distributed under the terms of
# this Lesser General Public License (also called "this License").
# Each licensee is addressed as "you".
# 
#   A "library" means a collection of software functions and/or data
# prepared so as to be conveniently linked with application programs
# (which use some of those functions and data) to form executables.
# 
#   The "Library", below, refers to any such software library or work
# which has been distributed under these terms.  A "work based on the
# Library" means either the Library or any derivative work under
# copyright law: that is to say, a work containing the Library or a
# portion of it, either verbatim or with modifications and/or translated
# straightforwardly into another language.  (Hereinafter, translation is
# included without limitation in the term "modification".)
# 
#   "Source code" for a work means the preferred form of the work for
# making modifications to it.  For a library, complete source code means
# all the source code for all modules it contains, plus any associated
# interface definition files, plus the scripts used to control compilation
# and installation of the library.
# 
#   Activities other than copying, distribution and modification are not
# covered by this License; they are outside its scope.  The act of
# running a program using the Library is not restricted, and output from
# such a program is covered only if its contents constitute a work based
# on the Library (independent of the use of the Library in a tool for
# writing it).  Whether that is true depends on what the Library does
# and what the program that uses the Library does.
# 
#   1. You may copy and distribute verbatim copies of the Library's
# complete source code as you receive it, in any medium, provided that
# you conspicuously and appropriately publish on each copy an
# appropriate copyright notice and disclaimer of warranty; keep intact
# all the notices that refer to this License and to the absence of any
# warranty; and distribute a copy of this License along with the
# Library.
# 
#   You may charge a fee for the physical act of transferring a copy,
# and you may at your option offer warranty protection in exchange for a
# fee.
# 
#   2. You may modify your copy or copies of the Library or any portion
# of it, thus forming a work based on the Library, and copy and
# distribute such modifications or work under the terms of Section 1
# above, provided that you also meet all of these conditions:
# 
#     a) The modified work must itself be a software library.
# 
#     b) You must cause the files modified to carry prominent notices
#     stating that you changed the files and the date of any change.
# 
#     c) You must cause the whole of the work to be licensed at no
#     charge to all third parties under the terms of this License.
# 
#     d) If a facility in the modified Library refers to a function or a
#     table of data to be supplied by an application program that uses
#     the facility, other than as an argument passed when the facility
#     is invoked, then you must make a good faith effort to ensure that,
#     in the event an application does not supply such function or
#     table, the facility still operates, and performs whatever part of
#     its purpose remains meaningful.
# 
#     (For example, a function in a library to compute square roots has
#     a purpose that is entirely well-defined independent of the
#     application.  Therefore, Subsection 2d requires that any
#     application-supplied function or table used by this function must
#     be optional: if the application does not supply it, the square
#     root function must still compute square roots.)
# 
# These requirements apply to the modified work as a whole.  If
# identifiable sections of that work are not derived from the Library,
# and can be reasonably considered independent and separate works in
# themselves, then this License, and its terms, do not apply to those
# sections when you distribute them as separate works.  But when you
# distribute the same sections as part of a whole which is a work based
# on the Library, the distribution of the whole must be on the terms of
# this License, whose permissions for other licensees extend to the
# entire whole, and thus to each and every part regardless of who wrote
# it.
# 
# Thus, it is not the intent of this section to claim rights or contest
# your rights to work written entirely by you; rather, the intent is to
# exercise the right to control the distribution of derivative or
# collective works based on the Library.
# 
# In addition, mere aggregation of another work not based on the Library
# with the Library (or with a work based on the Library) on a volume of
# a storage or distribution medium does not bring the other work under
# the scope of this License.
# 
#   3. You may opt to apply the terms of the ordinary GNU General Public
# License instead of this License to a given copy of the Library.  To do
# this, you must alter all the notices that refer to this License, so
# that they refer to the ordinary GNU General Public License, version 2,
# instead of to this License.  (If a newer version than version 2 of the
# ordinary GNU General Public License has appeared, then you can specify
# that version instead if you wish.)  Do not make any other change in
# these notices.
# 
#   Once this change is made in a given copy, it is irreversible for
# that copy, so the ordinary GNU General Public License applies to all
# subsequent copies and derivative works made from that copy.
# 
#   This option is useful when you wish to copy part of the code of
# the Library into a program that is not a library.
# 
#   4. You may copy and distribute the Library (or a portion or
# derivative of it, under Section 2) in object code or executable form
# under the terms of Sections 1 and 2 above provided that you accompany
# it with the complete corresponding machine-readable source code, which
# must be distributed under the terms of Sections 1 and 2 above on a
# medium customarily used for software interchange.
# 
#   If distribution of object code is made by offering access to copy
# from a designated place, then offering equivalent access to copy the
# source code from the same place satisfies the requirement to
# distribute the source code, even though third parties are not
# compelled to copy the source along with the object code.
# 
#   5. A program that contains no derivative of any portion of the
# Library, but is designed to work with the Library by being compiled or
# linked with it, is called a "work that uses the Library".  Such a
# work, in isolation, is not a derivative work of the Library, and
# therefore falls outside the scope of this License.
# 
#   However, linking a "work that uses the Library" with the Library
# creates an executable that is a derivative of the Library (because it
# contains portions of the Library), rather than a "work that uses the
# library".  The executable is therefore covered by this License.
# Section 6 states terms for distribution of such executables.
# 
#   When a "work that uses the Library" uses material from a header file
# that is part of the Library, the object code for the work may be a
# derivative work of the Library even though the source code is not.
# Whether this is true is especially significant if the work can be
# linked without the Library, or if the work is itself a library.  The
# threshold for this to be true is not precisely defined by law.
# 
#   If such an object file uses only numerical parameters, data
# structure layouts and accessors, and small macros and small inline
# functions (ten lines or less in length), then the use of the object
# file is unrestricted, regardless of whether it is legally a derivative
# work.  (Executables containing this object code plus portions of the
# Library will still fall under Section 6.)
# 
#   Otherwise, if the work is a derivative of the Library, you may
# distribute the object code for the work under the terms of Section 6.
# Any executables containing that work also fall under Section 6,
# whether or not they are linked directly with the Library itself.
# 
#   6. As an exception to the Sections above, you may also combine or
# link a "work that uses the Library" with the Library to produce a
# work containing portions of the Library, and distribute that work
# under terms of your choice, provided that the terms permit
# modification of the work for the customer's own use and reverse
# engineering for debugging such modifications.
# 
#   You must give prominent notice with each copy of the work that the
# Library is used in it and that the Library and its use are covered by
# this License.  You must supply a copy of this License.  If the work
# during execution displays copyright notices, you must include the
# copyright notice for the Library among them, as well as a reference
# directing the user to the copy of this License.  Also, you must do one
# of these things:
# 
#     a) Accompany the work with the complete corresponding
#     machine-readable source code for the Library including whatever
#     changes were used in the work (which must be distributed under
#     Sections 1 and 2 above); and, if the work is an executable linked
#     with the Library, with the complete machine-readable "work that
#     uses the Library", as object code and/or source code, so that the
#     user can modify the Library and then relink to produce a modified
#     executable containing the modified Library.  (It is understood
#     that the user who changes the contents of definitions files in the
#     Library will not necessarily be able to recompile the application
#     to use the modified definitions.)
# 
#     b) Use a suitable shared library mechanism for linking with the
#     Library.  A suitable mechanism is one that (1) uses at run time a
#     copy of the library already present on the user's computer system,
#     rather than copying library functions into the executable, and (2)
#     will operate properly with a modified version of the library, if
#     the user installs one, as long as the modified version is
#     interface-compatible with the version that the work was made with.
# 
#     c) Accompany the work with a written offer, valid for at
#     least three years, to give the same user the materials
#     specified in Subsection 6a, above, for a charge no more
#     than the cost of performing this distribution.
# 
#     d) If distribution of the work is made by offering access to copy
#     from a designated place, offer equivalent access to copy the above
#     specified materials from the same place.
# 
#     e) Verify that the user has already received a copy of these
#     materials or that you have already sent this user a copy.
# 
#   For an executable, the required form of the "work that uses the
# Library" must include any data and utility programs needed for
# reproducing the executable from it.  However, as a special exception,
# the materials to be distributed need not include anything that is
# normally distributed (in either source or binary form) with the major
# components (compiler, kernel, and so on) of the operating system on
# which the executable runs, unless that component itself accompanies
# the executable.
# 
#   It may happen that this requirement contradicts the license
# restrictions of other proprietary libraries that do not normally
# accompany the operating system.  Such a contradiction means you cannot
# use both them and the Library together in an executable that you
# distribute.
# 
#   7. You may place library facilities that are a work based on the
# Library side-by-side in a single library together with other library
# facilities not covered by this License, and distribute such a combined
# library, provided that the separate distribution of the work based on
# the Library and of the other library facilities is otherwise
# permitted, and provided that you do these two things:
# 
#     a) Accompany the combined library with a copy of the same work
#     based on the Library, uncombined with any other library
#     facilities.  This must be distributed under the terms of the
#     Sections above.
# 
#     b) Give prominent notice with the combined library of the fact
#     that part of it is a work based on the Library, and explaining
#     where to find the accompanying uncombined form of the same work.
# 
#   8. You may not copy, modify, sublicense, link with, or distribute
# the Library except as expressly provided under this License.  Any
# attempt otherwise to copy, modify, sublicense, link with, or
# distribute the Library is void, and will automatically terminate your
# rights under this License.  However, parties who have received copies,
# or rights, from you under this License will not have their licenses
# terminated so long as such parties remain in full compliance.
# 
#   9. You are not required to accept this License, since you have not
# signed it.  However, nothing else grants you permission to modify or
# distribute the Library or its derivative works.  These actions are
# prohibited by law if you do not accept this License.  Therefore, by
# modifying or distributing the Library (or any work based on the
# Library), you indicate your acceptance of this License to do so, and
# all its terms and conditions for copying, distributing or modifying
# the Library or works based on it.
# 
#   10. Each time you redistribute the Library (or any work based on the
# Library), the recipient automatically receives a license from the
# original licensor to copy, distribute, link with or modify the Library
# subject to these terms and conditions.  You may not impose any further
# restrictions on the recipients' exercise of the rights granted herein.
# You are not responsible for enforcing compliance by third parties with
# this License.
# 
#   11. If, as a consequence of a court judgment or allegation of patent
# infringement or for any other reason (not limited to patent issues),
# conditions are imposed on you (whether by court order, agreement or
# otherwise) that contradict the conditions of this License, they do not
# excuse you from the conditions of this License.  If you cannot
# distribute so as to satisfy simultaneously your obligations under this
# License and any other pertinent obligations, then as a consequence you
# may not distribute the Library at all.  For example, if a patent
# license would not permit royalty-free redistribution of the Library by
# all those who receive copies directly or indirectly through you, then
# the only way you could satisfy both it and this License would be to
# refrain entirely from distribution of the Library.
# 
# If any portion of this section is held invalid or unenforceable under any
# particular circumstance, the balance of the section is intended to apply,
# and the section as a whole is intended to apply in other circumstances.
# 
# It is not the purpose of this section to induce you to infringe any
# patents or other property right claims or to contest validity of any
# such claims; this section has the sole purpose of protecting the
# integrity of the free software distribution system which is
# implemented by public license practices.  Many people have made
# generous contributions to the wide range of software distributed
# through that system in reliance on consistent application of that
# system; it is up to the author/donor to decide if he or she is willing
# to distribute software through any other system and a licensee cannot
# impose that choice.
# 
# This section is intended to make thoroughly clear what is believed to
# be a consequence of the rest of this License.
# 
#   12. If the distribution and/or use of the Library is restricted in
# certain countries either by patents or by copyrighted interfaces, the
# original copyright holder who places the Library under this License may add
# an explicit geographical distribution limitation excluding those countries,
# so that distribution is permitted only in or among countries not thus
# excluded.  In such case, this License incorporates the limitation as if
# written in the body of this License.
# 
#   13. The Free Software Foundation may publish revised and/or new
# versions of the Lesser General Public License from time to time.
# Such new versions will be similar in spirit to the present version,
# but may differ in detail to address new problems or concerns.
# 
# Each version is given a distinguishing version number.  If the Library
# specifies a version number of this License which applies to it and
# "any later version", you have the option of following the terms and
# conditions either of that version or of any later version published by
# the Free Software Foundation.  If the Library does not specify a
# license version number, you may choose any version ever published by
# the Free Software Foundation.
# 
#   14. If you wish to incorporate parts of the Library into other free
# programs whose distribution conditions are incompatible with these,
# write to the author to ask for permission.  For software which is
# copyrighted by the Free Software Foundation, write to the Free
# Software Foundation; we sometimes make exceptions for this.  Our
# decision will be guided by the two goals of preserving the free status
# of all derivatives of our free software and of promoting the sharing
# and reuse of software generally.
# 
#                             NO WARRANTY
# 
#   15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
# WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
# EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
# OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
# KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
# LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
# THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
# 
#   16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
# WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
# AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
# FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
# CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
# LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
# RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
# FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
# SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
# DAMAGES.
# 
#                      END OF TERMS AND CONDITIONS
# 
# 
# ======================================================================
# 
#            How to Apply These Terms to Your New Libraries
# 
#   If you develop a new library, and you want it to be of the greatest
# possible use to the public, we recommend making it free software that
# everyone can redistribute and change.  You can do so by permitting
# redistribution under these terms (or, alternatively, under the terms
# of the ordinary General Public License).
# 
#   To apply these terms, attach the following notices to the library.
# It is safest to attach them to the start of each source file to most
# effectively convey the exclusion of warranty; and each file should
# have at least the "copyright" line and a pointer to where the full
# notice is found.
# 
# 
#     <one line to give the library's name and a brief idea of what it does.>
#     Copyright (C) <year>  <name of author>
# 
#     This library is free software; you can redistribute it and/or
#     modify it under the terms of the GNU Lesser General Public
#     License as published by the Free Software Foundation; either
#     version 2.1 of the License, or (at your option) any later version.
# 
#     This library is distributed in the hope that it will be useful,
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#     Lesser General Public License for more details.
# 
#     You should have received a copy of the GNU Lesser General Public
#     License along with this library; if not, write to the Free Software
#     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
# 
# Also add information on how to contact you by electronic and paper mail.
# 
# You should also get your employer (if you work as a programmer) or
# your school, if any, to sign a "copyright disclaimer" for the library,
# if necessary.  Here is a sample; alter the names:
# 
#   Yoyodyne, Inc., hereby disclaims all copyright interest in the
#   library `Frob' (a library for tweaking knobs) written by James
#   Random Hacker.
# 
#   <signature of Ty Coon>, 1 April 1990
#   Ty Coon, President of Vice
# 
# That's all there is to it!
# 
# LICENSE FOR ocaml-ci-scripts:
# 
# ## ISC License
# 
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
# 
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
# 
# LICENSE FOR patdiff:
# 
# The MIT License
# 
# Copyright (c) 2005--2021 Jane Street Group, LLC <opensource@janestreet.com>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# 
# LICENSE FOR lwt:
# 
# Copyright (c) 1999-2020, the Authors of Lwt (docs/AUTHORS)
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# 
# LICENSE FOR toml:
# 
# GNU Lesser General Public License
# =================================
# 
# _Version 3, 29 June 2007_  
# _Copyright © 2007 Free Software Foundation, Inc. &lt;<http://fsf.org/>&gt;_
# 
# Everyone is permitted to copy and distribute verbatim copies
# of this license document, but changing it is not allowed.
# 
# 
# This version of the GNU Lesser General Public License incorporates
# the terms and conditions of version 3 of the GNU General Public
# License, supplemented by the additional permissions listed below.
# 
# ### 0. Additional Definitions
# 
# As used herein, “this License” refers to version 3 of the GNU Lesser
# General Public License, and the “GNU GPL” refers to version 3 of the GNU
# General Public License.
# 
# “The Library” refers to a covered work governed by this License,
# other than an Application or a Combined Work as defined below.
# 
# An “Application” is any work that makes use of an interface provided
# by the Library, but which is not otherwise based on the Library.
# Defining a subclass of a class defined by the Library is deemed a mode
# of using an interface provided by the Library.
# 
# A “Combined Work” is a work produced by combining or linking an
# Application with the Library.  The particular version of the Library
# with which the Combined Work was made is also called the “Linked
# Version”.
# 
# The “Minimal Corresponding Source” for a Combined Work means the
# Corresponding Source for the Combined Work, excluding any source code
# for portions of the Combined Work that, considered in isolation, are
# based on the Application, and not on the Linked Version.
# 
# The “Corresponding Application Code” for a Combined Work means the
# object code and/or source code for the Application, including any data
# and utility programs needed for reproducing the Combined Work from the
# Application, but excluding the System Libraries of the Combined Work.
# 
# ### 1. Exception to Section 3 of the GNU GPL
# 
# You may convey a covered work under sections 3 and 4 of this License
# without being bound by section 3 of the GNU GPL.
# 
# ### 2. Conveying Modified Versions
# 
# If you modify a copy of the Library, and, in your modifications, a
# facility refers to a function or data to be supplied by an Application
# that uses the facility (other than as an argument passed when the
# facility is invoked), then you may convey a copy of the modified
# version:
# 
# * **a)** under this License, provided that you make a good faith effort to
# ensure that, in the event an Application does not supply the
# function or data, the facility still operates, and performs
# whatever part of its purpose remains meaningful, or
# 
# * **b)** under the GNU GPL, with none of the additional permissions of
# this License applicable to that copy.
# 
# ### 3. Object Code Incorporating Material from Library Header Files
# 
# The object code form of an Application may incorporate material from
# a header file that is part of the Library.  You may convey such object
# code under terms of your choice, provided that, if the incorporated
# material is not limited to numerical parameters, data structure
# layouts and accessors, or small macros, inline functions and templates
# (ten or fewer lines in length), you do both of the following:
# 
# * **a)** Give prominent notice with each copy of the object code that the
# Library is used in it and that the Library and its use are
# covered by this License.
# * **b)** Accompany the object code with a copy of the GNU GPL and this license
# document.
# 
# ### 4. Combined Works
# 
# You may convey a Combined Work under terms of your choice that,
# taken together, effectively do not restrict modification of the
# portions of the Library contained in the Combined Work and reverse
# engineering for debugging such modifications, if you also do each of
# the following:
# 
# * **a)** Give prominent notice with each copy of the Combined Work that
# the Library is used in it and that the Library and its use are
# covered by this License.
# 
# * **b)** Accompany the Combined Work with a copy of the GNU GPL and this license
# document.
# 
# * **c)** For a Combined Work that displays copyright notices during
# execution, include the copyright notice for the Library among
# these notices, as well as a reference directing the user to the
# copies of the GNU GPL and this license document.
# 
# * **d)** Do one of the following:
#     - **0)** Convey the Minimal Corresponding Source under the terms of this
# License, and the Corresponding Application Code in a form
# suitable for, and under terms that permit, the user to
# recombine or relink the Application with a modified version of
# the Linked Version to produce a modified Combined Work, in the
# manner specified by section 6 of the GNU GPL for conveying
# Corresponding Source.
#     - **1)** Use a suitable shared library mechanism for linking with the
# Library.  A suitable mechanism is one that **(a)** uses at run time
# a copy of the Library already present on the user's computer
# system, and **(b)** will operate properly with a modified version
# of the Library that is interface-compatible with the Linked
# Version.
# 
# * **e)** Provide Installation Information, but only if you would otherwise
# be required to provide such information under section 6 of the
# GNU GPL, and only to the extent that such information is
# necessary to install and execute a modified version of the
# Combined Work produced by recombining or relinking the
# Application with a modified version of the Linked Version. (If
# you use option **4d0**, the Installation Information must accompany
# the Minimal Corresponding Source and Corresponding Application
# Code. If you use option **4d1**, you must provide the Installation
# Information in the manner specified by section 6 of the GNU GPL
# for conveying Corresponding Source.)
# 
# ### 5. Combined Libraries
# 
# You may place library facilities that are a work based on the
# Library side by side in a single library together with other library
# facilities that are not Applications and are not covered by this
# License, and convey such a combined library under terms of your
# choice, if you do both of the following:
# 
# * **a)** Accompany the combined library with a copy of the same work based
# on the Library, uncombined with any other library facilities,
# conveyed under the terms of this License.
# * **b)** Give prominent notice with the combined library that part of it
# is a work based on the Library, and explaining where to find the
# accompanying uncombined form of the same work.
# 
# ### 6. Revised Versions of the GNU Lesser General Public License
# 
# The Free Software Foundation may publish revised and/or new versions
# of the GNU Lesser General Public License from time to time. Such new
# versions will be similar in spirit to the present version, but may
# differ in detail to address new problems or concerns.
# 
# Each version is given a distinguishing version number. If the
# Library as you received it specifies that a certain numbered version
# of the GNU Lesser General Public License “or any later version”
# applies to it, you have the option of following the terms and
# conditions either of that published version or of any later version
# published by the Free Software Foundation. If the Library as you
# received it does not specify a version number of the GNU Lesser
# General Public License, you may choose any version of the GNU Lesser
# General Public License ever published by the Free Software Foundation.
# 
# If the Library as you received it specifies that a proxy can decide
# whether future versions of the GNU Lesser General Public License shall
# apply, that proxy's public statement of acceptance of any version is
# permanent authorization for you to choose that version for the
# Library.
# 
