* elf-bfd.h (struct elf_obj_tdata): Change symbuf type to void *.

	* elf-bfd.h (struct elf_obj_tdata): Change symbuf type to void *.
	* elf.c (struct elf_symbuf_symbol, struct elf_symbuf_head): New types.
	(struct elf_symbol): Change first member into union.
	(elf_sort_elf_symbol): Compare pointers to internal syms rather than
	internal syms.  Only compare st_shndx fields.
	(elf_create_symbuf): New function.
	(bfd_elf_match_symbols_in_sections): Use it.  If symbufs are available
	for bfds, use a binary search, otherwise don't qsort symbols
	unnecessarily only to select which symbols are for the particular
	shndx.