bfd:

bfd:
	* elfxx-mips.c (mips_elf_merge_obj_attributes): New.
	(_bfd_mips_elf_merge_private_bfd_data): Call it.

binutils:
	* readelf.c (display_mips_gnu_attribute): New.
	(process_mips_specific): Call process_attributes.

include/elf:
	* mips.h (Tag_GNU_MIPS_ABI_FP): Define.

ld/testsuite:
	* ld-mips-elf/attr-gnu-4-0.s, ld-mips-elf/attr-gnu-4-00.d,
	ld-mips-elf/attr-gnu-4-01.d, ld-mips-elf/attr-gnu-4-02.d,
	ld-mips-elf/attr-gnu-4-03.d, ld-mips-elf/attr-gnu-4-1.s,
	ld-mips-elf/attr-gnu-4-10.d, ld-mips-elf/attr-gnu-4-11.d,
	ld-mips-elf/attr-gnu-4-12.d, ld-mips-elf/attr-gnu-4-13.d,
	ld-mips-elf/attr-gnu-4-14.d, ld-mips-elf/attr-gnu-4-2.s,
	ld-mips-elf/attr-gnu-4-20.d, ld-mips-elf/attr-gnu-4-21.d,
	ld-mips-elf/attr-gnu-4-22.d, ld-mips-elf/attr-gnu-4-23.d,
	ld-mips-elf/attr-gnu-4-3.s, ld-mips-elf/attr-gnu-4-30.d,
	ld-mips-elf/attr-gnu-4-31.d, ld-mips-elf/attr-gnu-4-32.d,
	ld-mips-elf/attr-gnu-4-33.d, ld-mips-elf/attr-gnu-4-4.s,
	ld-mips-elf/attr-gnu-4-41.d: New.
	* ld-mips-elf/mips-elf.exp: Run these new tests.