* config/mips-tm-mips.h (mips_extra_func_info): New frame_adjust

	* config/mips-tm-mips.h (mips_extra_func_info): New frame_adjust
	member for storing offset of MIPS16 frame pointer from SP.
	* mips-tdep.c: Use RA_REGNUM instead of hardcoded 31 throughout.
	(PROC_FRAME_ADJUST): Define.
	(mips16_heuristic_proc_desc): Store frame pointer adjustment value.
	(get_frame_pointer): Use frame pointer adjustment value when
	calculating frame address.
	* remote-sim.c (gdbsim_fetch_register): Don't fetch registers
	that have a null or empty name.
start-sanitize-tx19
	* config/mips/tm-tx19.h (MIPS_DEFAULT_FPU_TYPE): Define.
	(REGISTER_NAMES): Redefine to eliminate FP registers.
	* config/mips/tm-tx19l.h: Ditto.
end-sanitize-tx19