* elf-bfd.h (struct sym_sec_cache): Delete.

	* elf-bfd.h (struct sym_sec_cache): Delete.
	(struct sym_cache): New.
	(bfd_section_from_r_symndx): Delete prototype.
	(bfd_sym_from_r_symndx): Define prototype.
	* elf.c (bfd_section_from_r_symndx): Delete, replace with..
	(bfd_sym_from_r_symndx): ..new function.
	* elf32-arm.c: Update all uses of struct sym_sec_cache and
	bfd_section_from_r_symndx to new struct and function.
	* elf32-bfin.c: Likewise.
	* elf32-hppa.c: Likewise.
	* elf32-i386.c: Likewise.
	* elf32-m32r.c: Likewise.
	* elf32-m68hc1x.c: Likewise.
	* elf32-m68hc1x.h: Likewise.
	* elf32-m68k.c: Likewise.
	* elf32-ppc.c: Likewise.
	* elf32-s390.c: Likewise.
	* elf32-sh.c: Likewise.
	* elf64-ppc.c: Likewise.
	* elf64-s390.c: Likewise.
	* elf64-x86-64.c: Likewise.
	* elfxx-sparc.c: Likewise.
	* elfxx-sparc.h: Likewise.