Add new debug logging system; clean up existing debug/error messages
Fix some compiler warnings
Slightly better fix to GlutGameMode problems (but we're still avoiding the bad code for now).
Remove old references to windows.h; update gametimer to (someday) allow windows compile; cosmetic clean up
Be a little better about not including editor code when it isn't enabled.
Code clean up (cosmetic)
Sound.cpp/h is no longer used -- its was split into two classes: SoundFX and Music
Rename global scripting variables (make them better describe what they are)
Clean up (cosmetic)
Clean up some "magic numbers" and other cosmetic updates