Copyright for tardiff source package in Xenial

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: tardiff
Source: http://tardiff.coolprojects.org/tardiff

Files: *
Copyright: 2005 Josef Spillner 
License: GPL-2.0+
Comment: GPL version clarified by upstream author in a non-English e-mail to the package maintainer.

Files: debian/*
Copyright: 2011 Axel Beckert 
License: GPL-2.0+

License: GPL-2.0+
 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 package 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, see .
 .
 On Debian systems, the complete text of the GNU General
 Public License version 2 can be found in "/usr/share/common-licenses/GPL-2".