Fix pointer to Uint16 (and vise versa) conversion
Remove dependency on OpenGL version
Add detection of OpenGL ES in class OglVersion
Implement detection of R/RG texture format
Fix compiler warnings/error for x64 build
Fix crash for x64 build (g++)
Add missing virtual destructors
Add error handling for loading/saving a game

Fix game loading crash (g++ x64 build)
Add class for string formatting
Get rid off sprintf for chunk name formatting
Fix saving/loading 'overhead' data
Fix saving/loading config data
Fix keyboard event handling
Reduce compiler warnings about unreferenced formal parameter
Reduce compiler warnings
Remove unused source files (assembler, etc.)