Initial support for texturing from framebuffers.
Try to adjust texture size for fbo dimension
Merge branch 'master' into framebuffer-texture
Merge branch 'master' into framebuffer-texture
Merge branch 'master' into framebuffer-texture

Conflicts:
	GPU/GLES/StateMapping.cpp
Merge branch 'master' into framebuffer-texture

Conflicts:
	GPU/GLES/TextureCache.cpp