gas/testsuite/

	gas/testsuite/
	* gas/arm/dis-data.d: Update test name.  Do not expect
	.word output.
	* gas/arm/dis-data2.d, gas/arm/dis-data2.s,
	gas/arm/dis-data3.d, gas/arm/dis-data3.s: New tests.

	opcodes/
	* opcodes/arm-dis.c (struct arm_private_data): New.
	(print_insn_coprocessor, print_insn_arm): Update to use struct
	arm_private_data.
	(is_mapping_symbol, get_map_sym_type): New functions.
	(get_sym_code_type): Check the symbol's section.  Do not check
	mapping symbols.
	(print_insn): Default to disassembling ARM mode code.  Check
	for mapping symbols separately from other symbols.  Use
	struct arm_private_data.