bfd/

bfd/
	* elf64-ppc.c (struct ppc_link_hash_entry): Add was_undefined.
	(struct ppc_link_hash_table): Remove no_multi_toc, multi_toc_needed.
	Make emit_stub_syms, stub_error and has_14bit_branch bit-fields.
	Add twiddled_syms.
	(link_hash_newfunc): Init was_undefined.
	(add_symbol_adjust): Don't set undefined dot symbols to defweak;
	Use undefweak instead.
	(ppc64_elf_check_directives): Fix undefs chain.
	(ppc64_elf_next_toc_section): Remove no_multi_toc and multi_toc_needed
	references.
	(ppc64_elf_size_stubs): Adjust for add_symbol_adjust change.
	(undo_symbol_twiddle, ppc64_elf_restore_symbols): New functions.
	* elf64-ppc.h (ppc64_elf_restore_symbols): Declare.
ld/
	* emultempl/ppc64elf.em (gld${EMULATION_NAME}_finish): Call
	ppc64_elf_restore_symbols.