64-bit MIPS ELF ABI objdump support:

	64-bit MIPS ELF ABI objdump support:
	* elf64-mips.c: New file.
	* Makefile.in: Rebuild dependencies.
 	(BFD64_BACKENDS): Add elf64-mips.o.
	(BFD64_BACKENDS_CFILES): Add elf64-mips.c.
	* config.bfd (mips*el-*-elf*) Add bfd_elf64_bigmips_vec and
	bfd_elf64_littlemips_vec to targ_selvecs.
	(mips*-*-elf*): Likewise.
	* confingure.in: Add bfd_elf64_bigmips_vec and
	bfd_elf64_littlemips_vec to vector switch.
	* configure: Rebuild.
	* elf32-mips.c (_bfd_mips_elf_section_from_shdr): New function,
	broken out of mips_elf_section_from_shdr.
	(mips_elf32_section_from_shdr): Rename from
	mips_elf_section_from_shdr.  Call new function.
	(elf_backend_section_from_shdr): Update name of renamed function.
	* elf-bfd.h (struct elf_size_info): Change second parameter of
	write_out_phdrs to be const.  Likewise for second parameter of
	swap_symbol_out.
	(struct bfd_elf_section_data): Add rel_hdr2 field.
	(bfd_elf32_swap_symbol_in): Change second parameter to be const.
	(bfd_elf32_swap_symbol_out): Likewise.
	(bfd_elf32_swap_reloc_in): Likewise.
	(bfd_elf32_swap_reloc_out): Likewise.
	(bfd_elf32_swap_reloca_in): Likewise.
	(bfd_elf32_swap_reloca_out): Likewise.
	(bfd_elf32_swap_phdr_in): Likewise.
	(bfd_elf32_swap_phdr_out): Likewise.
	(bfd_elf32_swap_dyn_in): Likewise.
	(bfd_elf32_swap_dyn_out): Likewise.
	(bfd_elf32_slurp_symbol_table): Declare.
	(bfd_elf32_write_shdrs_and_ehdr): Declare.
	(bfd_elf32_write_out_phdrs): Declare.
	(bfd_elf64_swap_symbol_in): Change second parameter to be const.
	(bfd_elf64_swap_symbol_out): Likewise.
	(bfd_elf64_swap_reloc_in): Likewise.
	(bfd_elf64_swap_reloc_out): Likewise.
	(bfd_elf64_swap_reloca_in): Likewise.
	(bfd_elf64_swap_reloca_out): Likewise.
	(bfd_elf64_swap_phdr_in): Likewise.
	(bfd_elf64_swap_phdr_out): Likewise.
	(bfd_elf64_swap_dyn_in): Likewise.
	(bfd_elf64_swap_dyn_out): Likewise.
	(bfd_elf64_slurp_symbol_table): Declare.
	(bfd_elf64_write_shdrs_and_ehdr): Declare.
	(bfd_elf64_write_out_phdrs): Declare.
	(_bfd_mips_elf_section_from_shdr): Declare.
	* elf.c (bfd_section_from_shdr): Remove assertion requiring
	SHT_REL/SHT_RELA to match use_rela_p.  If there is already a reloc
	section for the section, add the new one to rel_hdr2.  Increment
	reloc_count rather than setting it.
	* elfcode.h (elf_slurp_symbol_table): Define name as macro.
	Remove static declaration.
	(elf_write_shdrs_and_ehdr): Define name as macro.
	(elf_write_out_phdrs): Likewise.
	(elf_swap_ehdr_in, elf_swap_ehdr_out): Declare.
	(elf_swap_shdr_in, elf_swap_shdr_out): Declare.
	(elf_swap_symbol_in): Change second parameter to be const.
	(elf_swap_symbol_out): Likewise.
	(elf_swap_ehdr_in, elf_swap_ehdr_out): Likewise.
	(elf_swap_shdr_in, elf_swap_shdr_out): Likewise.
	(elf_swap_phdr_in, elf_swap_phdr_out): Likewise.
	(elf_swap_reloc_in, elf_swap_reloc_out): Likewise.
	(elf_swap_reloca_in, elf_swap_reloca_out): Likewise.
	(elf_write_out_phdrs): Rename from write_out_phdrs.  Change second
	parameter to be const.  Make non-static.
	(elf_write_shdrs_and_ehdr): Rename from write_shdrs_and_ehdr.
	Make non-static.
	(elf_slurp_symbol_table): Make non-static.
	(NAME(_bfd_elf,size_info)): Update names of renamed functions.
	* elfxx-target.h (elf_info_to_howto): Define if not defined.
	(elf_backend_size_info): Likewise.
	(elfNN_bed): Use elf_backend_size_info.
	* targets.c (bfd_elf64_bigmips_vec): Declare.
	(bfd_elf64_littlemips_vec): Declare.
	(bfd_target_vector): Add bfd_elf64_bigmips_vec and
	bfd_elf64_littlemips_vec if BFD64 is defined.