Copyright for libipc-shareable-perl source package in Xenial

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: IPC-Shareable
Source: https://metacpan.org/release/IPC-Shareable/
Upstream-Contact: Mike South 

Files: *
Copyright: 1997-2001, Benjamin Sugars 
 2012, Mike South 
License: GPL-2+
X-Comment: The upstream distribution does not contain an explicit statement of
 copyright ownership. Pursuant to the Berne Convention for the Protection of
 Literary and Artistic Works, it is assumed that all content is copyright by
 its respective authors unless otherwise stated.

Files: debian/*
Copyright: 2001, 2002, 2004, Philippe Troin 
 2006, 2007, Martín Ferrari 
 2008, Gunnar Wolf 
 2010, gregor herrmann 
 2013, Xavier Guimard 
License: Artistic or GPL-1+

License: GPL-2+
 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; version 2 dated June, 1991, or (at your
 option) any later version.
 .
 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'.

License: Artistic
 This program is free software; you can redistribute it and/or modify
 it under the terms of the Artistic License, which comes with Perl.
 .
 On Debian systems, the complete text of the Artistic License can be
 found in `/usr/share/common-licenses/Artistic'.

License: GPL-1+
 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 1, or (at your option)
 any later version.
 .
 On Debian systems, the complete text of version 1 of the GNU General
 Public License can be found in `/usr/share/common-licenses/GPL-1'.