Copyright for libstroke source package in Xenial

This is the debian package of libstroke. The gEDA sources were downloaded
from http://www.etla.net/. The package was created by Hamish
Moffatt, March 1, 1999.

This software is released under the GNU General Public License,
version 2; please see /usr/share/common-licenses/GPL on your Debian
system. libgeda is released under the GNU Library General Public License
(LGPL), /usr/share/common-licenses/LGPL.