* linux-nat.c (linux_nat_resume): In non-stop, also only tag

	* linux-nat.c (linux_nat_resume): In non-stop, also only tag
	resumed LWPs as resumed.
	(linux_nat_wait_1): If there's no resumed LWP in the set of LWPs
	we're waiting for, bail out with TARGET_WAITKIND_IGNORE, instead
	of throwing an internal error.  If an LWP of a process we're not
	waiting for reports a signal, don't force collecting a SIGSTOP,
	and if it was breakpoint hit in non-stop mode, cancel it.  Don't
	go through all LWPs cancelling breakpoints in non-stop mode.
	(resume_stopped_resumed_lwps): New.
	(linux_nat_wait): Use it.