Make ld -s work on AIX:

	Make ld -s work on AIX:
	* xcofflink.c (xcoff_link_add_symbols): Don't create the .debug
	section if we are stripping.
	(bfd_xcoff_size_dynamic_sections): Don't set the .debug section
	size if we are stripping.
	(_bfd_xcoff_bfd_final_link): Don't set SEC_RELOC or rel_filepos,
	and don't write out relocs, if we are stripping.
	(xcoff_link_input_bfd): Don't set up reloc if we are stripping.
	(xcoff_write_global_symbol): Don't write out symbol or reloc if we
	are stripping.