* infrun.c (wait_for_inferior): Move assignments to stop_signal

	* infrun.c (wait_for_inferior): Move assignments to stop_signal
	and stop_pc, and STOPPED_BY_WATCHPOINT code, back where they
	were--after the switch statement on w.kind.  You can't read the
	registers of an inferior which has exited.  Use a goto in the
	STOPPED_BY_WATCHPOINT code.
	* infrun.c (wait_for_inferior): Reinstate
	HAVE_STEPPABLE_WATCHPOINT and HAVE_CONTINUABLE_WATCHPOINT code.