* elf.c (group_signature): Swap in the whole symbol, and handle

	* elf.c (group_signature): Swap in the whole symbol, and handle
	extracting section symbol names.
	(setup_group): Add comment.
	(set_group_contents): When called from objcopy or ld, arrange for
	section contents to be written.  Write group member output section
	indices to allow objcopy to reorganize sections.
	(_bfd_elf_copy_private_section_data): Copy group info.