http://people.salixos.org/maximuus/xfdiff/4.5.0/SLKBUILD
http://people.salixos.org/maximuus/xfdiff/4.5.0/build-xfdiff.sh
http://downloads.sourceforge.net/project/xffm/xfdiff/4.5.0/xfdiff-4.5.0.tar.gz