Vega Strike Code

Another batch of files cleansed of unused variables and functions and commented out code.

Make cube maps enabled by default.

Commit fix to SourceListener.h to aid the upcoming merger of trunk changes into the audio branch

Another batch of files cleaned up of unused variables and functions, dead code, and variously manually prettified.

Merging safemode -r12740 to trunk, includes a evil little bug klauss committed to my branch (maybe by mistake?) and a commented place-holder for where shield colliding should go

merging trunk -r12739 to safemode branch

Fix bug with light size computation: NaNs were being sent to shaders,
resulting in white/black objects.

More weeding out of unused variables and functions, and cosmetics. NOTE: There is a *BUG* I don't know how to fix in src/cmd/unit_interface.cpp, line 1261. Variable "removalindex" is used uninitialized. There's also something very strange in src/main.cpp, line 165. Hard to explain it...

Code Blocks Project file (vegastrike.cbp) added to /vega-vc7. Thanks to shenle for the contribution.

Removed the Wno-unused-variable and Wno-unused-function warning overrides from cmaklists.txt, and began removing unused variables and functions, plus cosmetics and wholesale removal of swaths of commented out, obsolete code.