Axel -- what problem are you trying to solve?
FWIW, this license statement:
% Copyright (C) 2004, 2005 Rune Kleveland, Ole Michael Selberg. % Copying and distribution of this file, with or without modification, % are permitted in any medium without royalty provided the copyright % notice and this notice are preserved.
is the standard GNU "all-permissive" text and is compatible with the GNU GPL.
karl