Copyright for rakudo source package in Xenial

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Rakudo
Source: https://github.com/rakudo/rakudo

Files: *
Copyright: 2008-2015, The Perl Foundation
License: Artistic-2.0

Files: debian/*
Copyright: 2009 Ryan Niebur,
 2010-2011, Alessandro Ghedini ,
 2014-2015 Dominique Dumont 
License: Artistic-2.0

License: Artistic-2.0
         The Artistic License 2.0
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