Copyright for libowfat source package in Focal

This package was debianized by Christian Kurz 
and was adopted by Gerrit Pape  on
Tue, 25 Nov 2003 11:04:26 +0000
later adopted by Roland Stigge  on
Sat, 09 Jul 2011 18:18:35 +0200

Source code was obtained from: http://www.fefe.de/libowfat/

Upstream Author: Felix von Leitner 

The following copyright applies to this package:

 Copyright (c) 2001 Felix von Leitner. 
 All rights reserved.

 This program is free software; you can redistribute it and/or modify it
 under the terms of the GNU General Public License Version 2 as published
 by the Free Software Foundation.

The full text of the GPLv2 can be found in /usr/share/common-licenses/GPL-2.