gas/

gas/
	* config/m68k-parse.h (m68k_register): Use MBO instead of MBB.
	(last_movec_reg): Change to MBO.
	* config/tc-m68k.c (fido_ctrl): Use MBO instead of MBB.
	(m68k_ip): Use MBO instead of MBO.
	(init_table): Use MBO instead of MBO.  Add an entry for mbo.

gas/testsuite/
	* gas/m68k/fido.s: Add tests for %mbo.
	* gas/m68k/fido.d: Update accordingly.

opcodes/
	* m68k-dis.c (print_insn_arg): Use %mbo instead of %mbb.