* elflink.c (_bfd_elf_create_got_section): Check existing .got

	* elflink.c (_bfd_elf_create_got_section): Check existing .got
	section flags before concluding that we've already been called.
	Don't use register keyword.
	(_bfd_elf_create_dynamic_sections): Don't use register keyword.
	(_bfd_elf_create_linker_section): Formatting.