fix OGL fullscreen switch for SDL since the old way only worked under Linux and not OSX or Windows
fix OGL version check, it would allow a required major version to be higher if the required minor version was lower than current
- remove all bitmap section support and fix problems with previous attempt
( code/bmpman/bmpman.cpp, code/bmpman/bmpman.h, code/globalincs/pstypes.h,
code/graphics/2d.cpp, code/graphics/2d.h code/graphics/grd3dbmpman.cpp,
code/graphics/grd3dinternal.h, code/graphics/grd3drender.cpp, code/graphics/grd3dtexture.cpp,
code/graphics/grinternal.h, code/graphics/gropengl.cpp, code/graphics/gropengl.h,
code/graphics/gropengllight.cpp, code/graphics/gropengltexture.cpp, code/graphics/gropengltexture.h,
code/graphics/tmapper.h, code/network/multi_pinfo.cpp, code/radar/radarorb.cpp
code/render/3ddraw.cpp )
- use CLAMP() define in gropengl.h for gropengllight instead of single clamp() function
- remove some old/outdated code from gropengl.cpp and gropengltexture.cpp
fix VBO crash with multitexture using same uv coord data
little speedup of opengl_tcache_frame()
error message to make sure hardware supports the minimum texture size
move OpenGL version check out of the extention printout code
disable 2d_poof with OpenGL
taylor