Copyright for libmailtools-perl source package in Trusty

Package: libmailtools-perl (originally "mailtools")

Upstream Author: Graham Barr 
Upstream Maintainer: Mark Overmeer 

Download URL:
 http://search.cpan.org/~markov/MailTools-1.74/

Debianised:
 Originally: Michael Alan Dorman 

Copyrights:
 Copyrights 1995-2000 Graham Barr gbarr@pobox.com
 Copyrights 1995-2007 by Mark Overmeer 
 Copyright (c) 2004 Bruno Negrao G Zica

License:
 ``
   This library is free software; you can redistribute it and/or
   modify it under the same terms as Perl itself.
 ''
 Perl is dual-licensed under "Artistic" and "GPL".
 The text of the GPL license is available from 
  /usr/share/common-licenses/GPL-2
 The text of the Artistic license is available from
  /usr/share/common-licenses/Artistic
 The text of the Perl license is available from
  /usr/share/doc/perl/copyright