Alternative german version for The Dig

[Alexandre Detiste]

> please find attached 3 patch files:
> - One for an alternative version of dig.la1 for The Dig, taken from the 
> original CD version

Applied

This created a regression because innoextract code doesn't currently know about 'look_for:'
- only the bare 'provides:' - I had to rework it to make it work without changing innoextract code for now.

Better fix innoextract code some day...

http://anonscm.debian.org/cgit/pkg-games/game-data-packager.git/tree/game_data_packager/__init__.py#n1650