Long branch stubs, multiple stub sections.

	Long branch stubs, multiple stub sections.
	* emultempl/ppc64elf.em: Include ldctor.h.
	(stub_file): New var.
	(group_size): New var.
	(ppc_create_output_section_statements): New function.
	(struct hook_stub_info): New.
	(hook_in_stub): New function.
	(ppc_add_stub_section): New function.
	(ppc_layout_sections_again): New function.
	(build_section_lists): New function.
	(gld${EMULATION_NAME}_finish): Rewrite.
	(real_func): New var.
	(ppc_for_each_input_file_wrapper): New function.
	(ppc_lang_for_each_input_file): New function.
	(lang_for_each_input_file): Define.
	(PARSE_AND_LIST_PROLOGUE): Define.
	(PARSE_AND_LIST_LONGOPTS): Define.
	(PARSE_AND_LIST_OPTIONS): Define.
	(PARSE_AND_LIST_ARGS_CASES): Define.
	(LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS): Define.