* NEWS: Document .ARM.exidx / .ARM.extab support.

	* NEWS: Document .ARM.exidx / .ARM.extab support.

	* dwarf.c (read_leb128): Make non-static.
	* dwarf.h (read_leb128): Declare.
	* readelf.c (REMOVE_ARCH_BITS): Define.
	(find_section_by_address): New.
	(read_uleb128): Move higher.  Use read_leb128 from dwarf.c.
	(find_symbol_for_address): Handle the Thumb bit for ARM, by
	using REMOVE_ARCH_BITS.
	(struct arm_section, struct arm_unw_aux_info, arm_print_vma_and_name)
	(arm_free_section, arm_section_get_word, decode_arm_unwind)
	(dump_arm_unwind, arm_process_unwind): New.
	(process_unwind): Handle ARM.