Copyright for billard-gl source package in Focal

This package was debianized by Martin Butterweck  on
Fri, 12 Apr 2002 00:11:50 +0200, adopted by Jamie Wilkinson on Fri,
6 Apr 2002, orphaned on Sun, 07 Mar 2004 and adopted by Thierry Reding on
Fri, 21 Jan 2005.

Today, the current maintainer is the Debian Games Team.

It was downloaded from http://www.billardgl.de

Upstream Authors:
    Tobias Nopper, Stefan Disch and Martina Welte 

Copyright:

    Copyright (C) 2001, 2002 Tobias Nopper, Stefan Disch and Martina Welte

License:

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 systems, the full text of the GNU General Public License can be
found at /usr/share/common-licenses/GPL-2.