* inferior.h (ARCH_NUM_REGS): New macro, actual number of

	* inferior.h (ARCH_NUM_REGS): New macro, actual number of
	registers in use by the inferior.
	* coredep.c (fetch_core_registers, register_addr): Use it.
	* findvar.c (registers_changed, registers_fetched,
	read_register_bytes): Ditto.
	* infcmd.c (do_registers_info, registers_info): Ditto.
	* infptrace.c (fetch_inferior_registers,
	store_inferior_registers): Ditto.
	* stack.c (frame_info): Ditto.

	* coredep.c (CORE_REGISTER_ADDR): New macro.
	(fetch_core_registers): Use it.