cpu/
	* fr30.cpu (f-disp9, f-disp10, f-s10, f-rel9, f-rel12): Don't
	left shift signed values.
opcodes/
	* fr30-ibld.c: Regenerate.

	* fr30.cpu (f.m4): Replace bogus comment with a better guess
	at what is really going on.

cpu/
	* fr30.cpu (f-m4): Replace -1 << 4 with -16.
opcodes/
	* fr30-ibld.c: Regenerate.