* fhandler.cc (fhandler_base::wait_overlapped): Honor nonblocking flag for

writes.  Don't reset event handle when we see a ERROR_IO_PENDING.
* sigproc.cc (stopped_or_terminated): Use bool constants for consistency.
* wait.cc (wait4): Remove nonsensical comment.

winsup/cygwin/wait.cc

@@ -100,8 +100,6 @@ wait4 (int intpid, int *status, int options, struct rusage *r)
 	}
       else if (res != WAIT_OBJECT_0)
 	{
-	  /* We shouldn't set errno to any random value if we can help it.
-	     See the Posix manual for a list of valid values for `errno'.  */
 	  set_errno (EINVAL);
 	  res = -1;
 	}