Copyright for libnet-ph-perl source package in Xenial

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Net-PH
Upstream-Contact: Graham Barr  and
                  Alex Hristov 
Source: https://metacpan.org/release/Net-PH

Files: *
Copyright: 1995-1997, Graham Barr 
 1995-1997, Alex Hristov 
 1988, Steven Dorner
 1988, Paul Pomes
 1988, The University of Illinois Board of Trustees
 1988, CSNET
License: Artistic or GPL-1+

Files: debian/*
Copyright: 2001, Michael Alan Dorman 
 2004, 2008, Joachim Breitner 
 2006, 2011, Russ Allbery 
 2006, Marc 'HE' Brockschmidt 
 2008, Roberto C. Sanchez 
License: Artistic or GPL-1+

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.