wined3d: Added support for compressed texture formats BC2 and BC3
d3d10core: Handle condition where blend_state is NULL
wined3d: Added else opcode to sm4 parser.
wined3d: Added ult opcode to sm4 parser.
wined3d: Added or opcode to sm4 parser.
wined3d: Added round_pi opcode to sm4 parser.