Copyright for debtags source package in Xenial

This package was first debianized by Enrico Zini  on
Fri, 25 Apr 2003 00:16:36 +0200.

Upstream Author: Enrico Zini 

Copyright (C) 2003--2013  Enrico Zini 
Copyright (C) 2012--2013  Enrico Rossi 
Copyright (C) 2012--2013  Michael Vogt 

License:

This software is distributed under the GNU General Public License,
which can be found at /usr/share/common-licenses/GPL-2.