New LICENSE file (no effective change in terms)

[Russ Allbery]

As folks may have noticed, the old COPYRIGHT file was rather old and
hadn't been updated in a while.  After conferring with the powers that be,
I've added a new LICENSE file with an updated copyright and license
statement, and also added a partial list of exceptions to the bottom as
there are a few things in the tree under different but compatible
licenses.

Here's the new file:

INN as a whole and all code contained in it not otherwise marked with
different licenses and/or copyrights is covered by the following copyright
and license:

   Copyright (c) 1991, 1994, 1995, 1996, 1997, 1998, 1999, 2000
       The Internet Software Consortium and Rich Salz

   This code is derived from software contributed to the Internet Software
   Consortium by Rich Salz

   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. All advertising materials mentioning features or use of this software
      must display the following acknowledgement:
      This product includes software developed by the Internet Software
        Consortium and its contributors.
   4. Neither the name of the Internet Software Consortium 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 INTERNET SOFTWARE CONSORTIUM 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 INTERNET
   SOFTWARE CONSORTIUM 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.

Some specific portions of INN are covered by different licenses, usually
more permissive ones.  Those licenses, if present, will be noted
prominantly at the top of those source files.  Specifically (but possibly
not comprehensively):

   authprogs/pwcheck.c may only be used for non-commercial purposes and by
   Internet Service Providers and other entities for internal purposes.
   See the beginning of the file for full details.

   backends/pgpverify.in and frontends/signcontrol.in are under a license
   very similar to the above but with UUNET Technologies, Inc. as the
   copyright holder.  See the end of those files for details.

   backends/shrinkfile.c, frontends/scanspool.in, lib/concat.c,
   lib/endian.c, and lib/parsedate.y are in the public domain.

   lib/inet_aton.c, lib/inet_ntoa.c, lib/memchr.c, lib/memcmp.c,
   lib/memmove.c, lib/memset.c, lib/strcasecmp.c, lib/strspn.c, and
   lib/strtok.c are taken from BSD sources and are covered by the standard
   BSD license.  See those files for more details.

   lib/md5.c is covered under the standard free MD5 license from RSA Data
   Security.  See the file for more details.

Please note that the files in the contrib directory are not properly part
of INN and may be under widely varying licenses.  Please each file and/or
its documentation for license information.

-- 
Russ Allbery (rra at stanford.edu)             <http://www.eyrie.org/~eagle/>