[cgen]

	* cpu/mep-c5.cpu (f-12s20): Change to signed.
	(lhucpm1): Limit to C5 mach.
	(dsp0,dsp1): Rewrite as aliases so that intrinsics are generated.
	* cpu/mep-core.cpu (extend-cdisp10): New.
	(f-cdisp10): Change to signed, use extend-cdisp10 to sign extend.

[opcodes]
	* mep-desc.c: Regenerate.
	* mep-ibld.c: Regenerate.
	* mep-opc.c: Regenerate.
	* mep-opc.h: Regenerate.

[sid/component/cgen-cpu/mep]
	* mep-core1-decode.cxx: Regenerate.
	* mep-core1-decode.h: Regenerate.
	* mep-decode.cxx: Regenerate.
	* mep-decode.h: Regenerate.