Copyright for tk-brief source package in Xenial

This package was debianized by Adrian Bunk  on
Tue,  7 Nov 2000 18:58:16 +0100.

It was downloaded from http://www.deres-mueller.de/tk_Brief/

Upstream Author: Ralf M"uller 

Copyright: (C) 1998-2000 [Ralf Müller] 

tk_Brief is released under the GPL Version 2.

See the file /usr/share/common-licenses/GPL-2 for more information.