Use GL_ARB_texture_rectangle in the OpenGL renderer, if supported.
--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401971
Fixed slowdown enumerating display modes, which was hosing OpenGL as well...
Removed SDL_ from the render driver prefixes
--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401958