Copyright for arc source package in Xenial

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: ARC
Source: http://sf.net/projects/arc

Files: *
Copyright: 1985-1987 System Enhancement Associates
           1985-1987 Thom Henderson
           2005-2010 Howard Chu 
License: GPL-2
Comment: the original license, from System Enhancement Associates, says
         "You may copy and distribute this program freely, under the terms
         of the General Public License". The Unix upstream chose the GPL-2
         version.

Files: debian/*
Copyright: 2003-2013 Klaus Reimer 
           2013      Anibal Monsalve Salazar 
           2015      Joao Eriberto Mota Filho 
           2015      Adilson dos Reis 
License: GPL-2

License: GPL-2
 This package 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; version 2 of the License.
 .
 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".