#262 Case sensitive search for game files

[Dominik Reichardt]

Currently we are only looking for all upper or lower case files (STATIC or static) when we look for the game files. Mixed cases (StaTic) will not be found on case sensitive file systems.
On http://log.usecode.org/pentagramlog.php?log=20Feb2012 Colourless and Willem offered some ideas on how to fix this.