See AUTHORS file for list of copyright holders.

Everything in src/lib/, src/auth/, and src/lib-sql/ is under MIT license
(see COPYING.MIT) unless otherwise mentioned at the beginning of the file.

Everything else is LGPLv2.1 (see COPYING.LGPL) unless otherwise mentioned
at the beginning of the file.

Current exceptions are:

src/lib/md5.c : Public Domain

src/lib/sha1.c and sha2.c:

 Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
 Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch>

 All rights reserved.

 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
 are met:
 1. Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
 2. 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.
 3. Neither the name of the project nor the names of its contributors
    may be used to endorse or promote products derived from this software
    without specific prior written permission.

 THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT OR CONTRIBUTORS BE LIABLE
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 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 SUCH DAMAGE.

src/lib/UnicodeData.txt:

 Copyright (C) 1991-2007 Unicode, Inc. All rights reserved. Distributed
 under the Terms of Use in http://www.unicode.org/copyright.html.

 Permission is hereby granted, free of charge, to any person obtaining a
 copy of the Unicode data files and any associated documentation (the "Data
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 notice appear with all copies of the Data Files or Software, (b) both the
 above copyright notice(s) and this permission notice appear in associated
 documentation, and (c) there is clear notice in each modified Data File or
 in the Software as well as in the documentation associated with the Data
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 Except as contained in this notice, the name of a copyright holder shall
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