* Makefile.am: Add elf32-arm.c.

    * Makefile.am:  Add elf32-arm.c.
        * Makefile.in:  Rebuild.
        * elf-bfd.h:  Add elf_backend_get_symbol_type.
        * elf.c (swap_out_syms):  If defined, call
        elf_backend_get_symbol_type.
        * elf32-arm.c: Define elf_backend_get_symbol_type.
        (elf32_arm_get_symbol-type):  New routine.
        (record_thumb_to_arm_glue):  Change to use STT_ARM_TFUNC.
        (bfd_elf32_arm_process_before_allocation):  Change to
        check for STT_ARM_TFUNC.
        (elf32_arm_final_link_relocate):  Likewise.
        * elfxx-target.h:  Add elf_backend_get_symbol_type.