Automatic migration. Original reporter: "ShiftZ"
Simply added a new method to GLESTexture interface checking if given foramt is supported or not. Returns false by default since there is no use for that in other render modules, but it can be usefull for DXT compressed textures if someone wanted. So imagecodec now may check if texture need to be decompressed or not. Used it in PVVImageCodec.
Additional information: Also some "beautifications".