Add support for mips16 (16 bit MIPS implementation):

	Add support for mips16 (16 bit MIPS implementation):
	* mips16-opc.c: New file.
	* mips-dis.c: Include "elf-bfd.h" and "elf/mips.h".
	(mips16_reg_names): New static array.
	(print_insn_big_mips): Use print_insn_mips16 in 16 bit mode or
	after seeing a 16 bit symbol.
	(print_insn_little_mips): Likewise.
	(print_insn_mips16): New static function.
	(print_mips16_insn_arg): New static function.
	* mips-opc.c: Add jalx instruction.
	* Makefile.in (mips16-opc.o): New target.
	* configure.in: Use mips16-opc.o for bfd_mips_arch.
	* configure: Rebuild.