* fhandler_tty.cc (fhandler_tty::ioctl): Semi-revert 2003-09-26 change for

TIOCSWINSZ.  It is not an error for ioctl_request_event to be missing.
* sigproc.cc (pending_signals::save): New function.
(pending_signals::restore): Ditto.
(sig_clear): Save/restore current queue pointer.
(wait_sig): Delete signals marked as such.
* sigproc.h (__SIGDELETE): New enum.

winsup/cygwin/sigproc.h

@@ -22,7 +22,8 @@ enum
   __SIGFLUSH	    = -(NSIG + 1),
   __SIGSTRACE	    = -(NSIG + 2),
   __SIGCOMMUNE	    = -(NSIG + 3),
-  __SIGPENDING	    = -(NSIG + 4)
+  __SIGPENDING	    = -(NSIG + 4),
+  __SIGDELETE	    = -(NSIG + 5)
 };
 #endif