Copyright for bird source package in Bullseye

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: bird
Upstream-Contact: bird-users@bird.network.cz
Source: http://bird.network.cz

Files: *
Copyright: 1998-2008 Martin Mareš
	   1998-2013 Ondřej Filip
	   1998-2000 Pavel Machek
	   2009-2013 Ondřej Zajíček
License: GPL-2+

Files: ./lib/md5.c
Copyright: 1993 Colin Plumb
License: public-domain

Files: lib/heap.h
Copyright: 2001 Martin Mares 
	   2005 Tomas Valla 
License: LGPL-2+

Files: debian/*
Copyright: 2010-2013 Ondřej Surý 
License: GPL-2+

License: GPL-2+
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.
  .
  This program 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 General Public License for more details.
  .
  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  .
  On Debian GNU/Linux systems, the complete text of the GNU General
  Public License can be found in `/usr/share/common-licenses/GPL-2'.

License: LGPL-2+
 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Library General Public
 License as published by the Free Software Foundation; either
 version 2 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
 Library General Public License for more details.
 .
 On Debian GNU/Linux systems, the complete text of the GNU Lesser
 General Public License can be found in `/usr/share/common-licenses/LGPL-2'.

License: public-domain
  This code is in the public domain; do with it what you wish.