remove OGL 1.4V2
as fog coordinate array is supposed to be part of OGL1.4, we consider it as always present and remove any code that deal without it
As GL_ARB_mutitexture is part of OGL1.3 I removed every part of the code that doesnt considere it as default and update to remove ARB suffixes.
remove GL_ARB_texture_env_combine and GL_EXT_texture_env_combine checks and consider them always true as they both are part of OGL1.3, also clean the constant names
Code cleanup. Remove a lot of extension checks for unused variables
Remove every mirror extension check as OGL hardware mirroring is in core since OGL1.5. This also remove some unused software mirroring code
remove old if-ogl checks
fix fog. Now fog vertex coordinate use a good value
remove deprecated vertex shader
Better handle of negative fractionnal part in moveword insert matrix (now the fractionnal part is added/substracted depending on the integer sign). This fix trees deformations in SSB64
Merge pull request #11 from Narann/master

Big cleanup, fix fog flicking, fix moveword force matrix (fix trees on SSB64)