* elf-bfd.h (elf_string_from_elf_strtab): Delete macro.

	* elf-bfd.h (elf_string_from_elf_strtab): Delete macro.
	* elf.c (bfd_elf_string_from_elf_section): Expand occurrence of
	elf_string_from_elf_strtab.
	(_bfd_elf_setup_group_pointers, bfd_section_from_shdr): Likewise.
	(bfd_section_from_shdr): For SHT_SYMTAB, load SHT_SYMTAB_SHNDX too
	if it exists.  Don't do the reverse for SHT_SYMTAB_SHNDX.  For
	SHT_STRTAB, check whether the strtab is for symtab or dynsymtab by
	looking at cached symtab info first, before iterating over headers.
	For SHT_REL and SHT_RELA, load dynsymtab if needed.
	* elfcode.h (elf_object_p): Don't load section header stringtab