* bfd/bfd-in.h (bfd_elf32_arm_set_target_relocs): Update prototype.

	* bfd/bfd-in.h (bfd_elf32_arm_set_target_relocs): Update prototype.
	* bfd/bfd-in2.h: Regenerate.
	* bfd/elf32-arm.c (elf32_arm_link_hash_table): New field, 'use_blx'.
	(elf32_arm_link_hash_table_create): Initialise fix_v4bx, use_blx.
	(bfd_elf32_arm_set_target_relocs): Handle use_blx.
	(elf32_arm_final_link_relocate): Use Thumb BLX for R_ARM_THM_PC22
	relocations if requested to.
	(allocate_dynrelocs): Don't count size of omitted Thumb stubs based on
	use_blx rather than symbian_p.
	(elf32_arm_finish_dynamic_symbol): Don't output Thumb PLT stubs if
	use_blx is in effect.
	(elf32_arm_symbian_link_hash_table_create): Enable use_blx by default
	for SymbianOS.
	* ld/ld.texinfo: Document --use-blx.
	* ld/emultempl/armelf.em (use_blx): New variable.
	(arm_elf_create_output_section_statements): Communicate value of
	use_blx to bfd.
	(PARSE_AND_LIST_PROLOGUE): Add OPTION_USE_BLX.
	(PARSE_AND_LIST_OPTIONS): Add --use-blx option.
	(PARSE_AND_LIST_ARGS_CASES): Add OPTION_USE_BLX case.