include/elf/

include/elf/
	* ppc.h: Add Tag_GNU_Power_ABI_Struct_Return.
bfd/
	* elf32-ppc.c (ppc_elf_merge_obj_attributes): Merge
	Tag_GNU_Power_ABI_Struct_Return.
binutils/
	* readelf.c (display_power_gnu_attribute): Decode
	Tag_GNU_Power_ABI_Struct_Return.
ld/testsuite/
	* ld-powerpc/gnu-attr-12-1.s: New file.
	* ld-powerpc/gnu-attr-12-2.s: New file.
	* ld-powerpc/gnu-attr-12-11.d: New file.
	* ld-powerpc/gnu-attr-12-21.d: New file.
	* ld-powerpc/powerpc.exp: Run new dump tests.