Copyright for wmnut source package in Xenial

This package was debianized by Arnaud Quette  on
Sat, 15 Feb 2003 18:14:42 +0100.

It was downloaded from https://github.com/aquette/wmnut/downloads

Upstream Author: Arnaud Quette 

Copyright:

WMNUT is copyright (c) 2001-2012 by Arnaud Quette and licensed through the GNU
General Public License. Read the COPYING file for the complete GNU license.

On Debian systems, the full text of the GNU General Public License can
be found in /usr/share/common-licenses/GPL-2.