Added basic support for building gettext locales in the Makefile.
The po file name should match the target locale.
[Dirk Hohndel: Used git mv to rename the German .po file]
Signed-off-by: Henrik Brautaset Aronsen <subsurface@henrik.synth.no>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
