bfd:

bfd:
	* elf32-ppc.c (ppc_elf_merge_obj_attributes): New.
	(ppc_elf_merge_private_bfd_data): Call it.

binutils:
	* readelf.c (display_power_gnu_attribute, process_power_specific):
	New.
	(process_arch_specific): Call process_power_specific.

include/elf:
	* ppc.h (Tag_GNU_Power_ABI_FP): Define.

ld/testsuite:
	* ld-powerpc/attr-gnu-4-0.s, ld-powerpc/attr-gnu-4-00.d,
	ld-powerpc/attr-gnu-4-01.d, ld-powerpc/attr-gnu-4-02.d,
	ld-powerpc/attr-gnu-4-1.s, ld-powerpc/attr-gnu-4-10.d,
	ld-powerpc/attr-gnu-4-11.d, ld-powerpc/attr-gnu-4-12.d,
	ld-powerpc/attr-gnu-4-13.d, ld-powerpc/attr-gnu-4-2.s,
	ld-powerpc/attr-gnu-4-20.d, ld-powerpc/attr-gnu-4-21.d,
	ld-powerpc/attr-gnu-4-22.d, ld-powerpc/attr-gnu-4-3.s,
	ld-powerpc/attr-gnu-4-31.d: New.
	* ld-powerpc/powerpc.exp: Run these new tests.