Reorganize TextureFormat enum a bit.
Reorganize TextureFormat enum a bit.

Special RGB values together, RGBA values together, Depth values
together, DepthStencil values together. Left sized internal formats in
the same order, though.

ashimidashajia/magnum,DerThorsten/magnum,DerThorsten/magnum,DerThorsten/magnum,DerThorsten/magnum,MiUishadow/magnum,ashimidashajia/magnum,ashimidashajia/magnum,MiUishadow/magnum,MiUishadow/magnum,MiUishadow/magnum,MiUishadow/magnum,ashimidashajia/magnum,DerThorsten/magnum,ashimidashajia/magnum,MiUishadow/magnum