Copyright for tofrodos source package in Buster

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Tofrodos
Source: http://www.thefreecountry.com/tofrodos/index.shtml
Files-Excluded:
 *.exe

Files: *
Copyright: 1996-2013 Christopher Heng
License: GPL-2

Files: debian/*
Copyright: 2005-2006, Florian Ernst 
           2008-2011, Alexander Reichle-Schmehl 
           2013-2018, Markus Koschany 
License: GPL-2

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