* ppc-dis.c (struct dis_private): New.
(powerpc_dialect): Make static. Accept -Many in addition to existing
options. Save dialect in dis_private.
(print_insn_big_powerpc): Retrieve dialect from dis_private.
(print_insn_little_powerpc): Likewise.
(print_insn_powerpc): Call powpc_dialect here. Remove unnecessary
efs/altivec check. Try harder to disassemble if given -Many.
* ppc-opc.c (insert_fxm): Expand comment.
(PPC, PPCCOM, PPC32, PPC64, PPCVEC): Remove PPC_OPCODE_ANY.
(POWER, POWER2, PPCPWR2, POWER32, COM, COM32, M601, PWRCOM): Likewise.
(POWER4): Remove PPCCOM.
(PPCONLY): Don't define. Update all occurrences to PPC.