* mips-dis.c (print_insn_args): Add GET_OP and GET_OP_S local

	* mips-dis.c (print_insn_args): Add GET_OP and GET_OP_S local
	macros, use local variables for info struct member accesses,
	update the type of the variable used to hold the instruction
	word.
	(print_insn_mips, print_mips16_insn_arg): Likewise.
	(print_insn_mips16): Add GET_OP and GET_OP_S local macros, use
	local variables for info struct member accesses.
	(print_insn_micromips): Add GET_OP_S local macro.
	(_print_insn_mips): Update the type of the variable used to hold
	the instruction word.