Copyright for cal3d source package in Sid

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Source: https://mp3butcher.github.io/Cal3D/
Upstream-Contact: Bruno 'Beosil' Heidelberger 
                  Laurent Desmecht 
                  Justin Hare 
                  and others

Files: *
Copyright: (c) 2001 - 2009 Bruno 'Beosil' Heidelberger
                           Laurent Desmecht
                           Justin Hare
                           and others
License: LGPL-2.1+
    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
Comment:
 On Debian GNU/Linux systems, the complete text of the GNU Library General
 Public License version 2.1 is found in `/usr/share/common-licenses/LGPL-2.1'.