Copyright for airstrike source package in Stretch

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Airstrike
Upstream-Contact: airstrike@icculus.org
Source: http://icculus.org/airstrike/

Files: *
Copyright: 2002, Ulf Ektröm
                 Peter Eismann
                 Eero Tamminen
                 Alessandro Giusti
License: GPL-2

Files: debian/*
Copyright: 2002-2004, Sven Velt
           2007,      Arthur Loiret 
           2008,      Barry deFreese 
           2011,      Ansgar Burchardt 
           2011,      Paul Wise 
           2014-2016, Markus Koschany 
License: GPL-2

License: GPL-2
 On Debian systems, the complete text of version 2 of the GNU General
 Public License can be found in `/usr/share/common-licenses/GPL-2'.