Copyright for xf86-input-wacom source package in Xenial

This package was created by Ron Lee  on
Thu,  4 Nov 2004 16:06:55 -0800.

The linuxwacom homepage is http://linuxwacom.sf.net

The upstream source is currently being obtained from:
git://anongit.freedesktop.org/~whot/xf86-input-wacom

linuxwacom is:
    Copyright (C) 1995-2004 Frederic Lepied
    Copyright (C) 2002-2004 John E. Joganic
    Copyright (C) 2002-2010 Ping Cheng, Wacom.
    Copyright (C) 1999-2005 Vojtech Pavlik
    and others.

    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.

A copy of the GPL can be found in /usr/share/common-licenses
on Debian systems.