PR binutils/13534

	PR binutils/13534
	* archive.c (_bfd_ar_sizepad): New function. Correctly install and
	pad the size field in an archive header.
	(_bfd_generic_read_ar_hdr_mag): Use the correct type and scan
	function for the archive size field.
	(bfd_generic_openr_next_archived_file): Likewise.
	(do_slurp_coff_armap): Likewise.
	(_bfd_write_archive_contents): Likewise.
	(_bfd_bsd44_write_ar_hdr): Use the new function.
	(bfd_ar_hdr_from_filesystem): Likewise.
	(_bfd_write_archive_contents): Likewise.
	(bsd_write_armap): Likewise.
	(coff_write_armap): Likewise.
	* archive64.c (bfd_elf64_archive_write_armap): Likewise.
	* bfdio.c (bfd_bread): Use correct type for archive element
	sizes.
	* ar.c (open_inarch): Likewise.
	(extract_file): Likewise.
	* libbfd-in.h (struct areltdata): Use correct types for
	parsed_size and extra_size fields.
	Prototype _bfd_ar_sizepad function.
	* libbfd.h: Regenerate.