[Haskell-cafe] frag game - compilation fixes

I've hacked through (senselessly) the various compilation errors (I think they were all related to GLfloat vs. Float, etc.) Frag now compiles and works, but I think I may have introduced some bugs (the weapon doesn't appear on the screen?) Unfortunately, I did the whole job on an unpacked cabal package from hackage, and also I've never used darcs. So here's the resulting package tree (excluding the big files). If anyone knows how to turn it into a darcs working copy and create a patch from it, please do!