Copyright for empire source package in Lunar

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: vms-empire
Source: http://www.catb.org/~esr/vms-empire/

Files: *
Copyright: 1987,1988, Chuck Simmons 
           1994-2021, Eric S. Raymond 
License: GPL-2

Files: debian/*
Copyright: 2000-2006, Peter Palfrader 
           2014-2021, Markus Koschany 
License: GPL-2

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