* elf-bfd.h (struct elf_size_info): Add swap_symbol_in field.

	* elf-bfd.h (struct elf_size_info): Add swap_symbol_in field.
	(bfd_elf32_swap_symbol_in): Update prototype.
	(bfd_elf64_swap_symbol_in): Likewise.
	* elfcode.h (elf_swap_symbol_in): Change input args to const PTR *.
	(elf_slurp_symbol_table): Adjust call to elf_swap_symbol_in.
	* elflink.h (elf_link_is_defined_archive_symbol): Likewise.
	(elf_link_add_object_symbols): Likewise.
	(elf_link_record_local_dynamic_symbol): Likewise.
	(elf_link_input_bfd): Likewise.
	(elf_gc_mark): Likewise.
	(elf_reloc_symbol_deleted_p): Likewise.
	* elf-m10200.c (mn10200_elf_relax_section): Likewise.
	(mn10200_elf_relax_delete_bytes): Likewise.
	(mn10200_elf_symbol_address_p): Likewise.
	(mn10200_elf_get_relocated_section_contents): Likewise.
	* elf-m10300.c (mn10300_elf_relax_section): Likewise.
	(mn10300_elf_relax_section): Likewise.
	(mn10300_elf_relax_delete_bytes): Likewise.
	(mn10300_elf_symbol_address_p): Likewise.
	(mn10300_elf_get_relocated_section_contents): Likewise.
	* elf32-h8300.c (elf32_h8_relax_section): Likewise.
	(elf32_h8_relax_delete_bytes): Likewise.
	(elf32_h8_symbol_address_p): Likewise.
	(elf32_h8_get_relocated_section_contents): Likewise.
	* elf32-hppa.c (get_local_syms): Likewise.
	* elf32-m68k.c (bfd_m68k_elf32_create_embedded_relocs): Likewise.
	* elf32-mips.c (bfd_mips_elf32_create_embedded_relocs): Likewise.
	* elf32-sh.c (sh_elf_relax_section): Likewise.
	(sh_elf_relax_delete_bytes): Likewise.
	(sh_elf_get_relocated_section_contents): Likewise.
	* elf32-xstormy16.c (xstormy16_elf_relax_section): Likewise.
	* elf64-alpha.c (elf64_alpha_relax_section): Likewise.
	* elf64-hppa.c (elf64_hppa_check_relocs): Likewise.
	* elf64-mmix.c (mmix_elf_relax_section): Likewise.
	* elf64-ppc.c (get_local_syms): Likewise.
	* elf64-sh64.c (sh_elf64_get_relocated_section_contents): Likewise.
	* elfxx-ia64.c (elfNN_ia64_relax_section): Likewise.
	* elfcode.h (NAME(_bfd_elf,size_info)): Update initialiser.
	* elf64-alpha.c (alpha_elf_size_info): Likewise.
	* elf64-hppa.c (hppa64_elf_size_info): Likewise.
	* elf64-mips.c (mips_elf64_size_info): Likewise.
	* elf64-s390.c (s390_elf64_size_info): Likewise.
	* elf64-sparc.c (sparc64_elf_size_info): Likewise.