* elflink.c (_bfd_elf_merge_symbol): Set old_alignment for

	* elflink.c (_bfd_elf_merge_symbol): Set old_alignment for
	usual common symbols as well as for dynamic.  Add poldbfd param.
	Save old bfd.  Adjust callers.
	(_bfd_elf_add_default_symbol): Add poldbfd param.  Pass "section"
	and "value" by value, not pointer.  Adjust caller.
	(elf_link_add_object_symbols): Combine undef_bfd and old_bfd vars.
	Delete code to set same.  Use old_bfd and old_alignment from
	_bfd_elf_merge_symbol instead.  Add default symbol before
	alignment and size checks.  Wrap overlong lines.