* syscalls.cc (system): Strip signal considerations from here so that they are

not inherited by a child process.
* spawn.cc (spawn_guts): Handle system() signal stuff here.
* winsup.h (_P_SYSTEM): Define.

winsup/cygwin/fhandler_nodevice.cc

@@ -0,0 +1,40 @@
+/* fhandler.cc.  See console.cc for fhandler_console functions.
+
+   Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#include "winsup.h"
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/cygwin.h>
+#include <sys/uio.h>
+#include <signal.h>
+#include "cygerrno.h"
+#include "perprocess.h"
+#include "security.h"
+#include "cygwin/version.h"
+#include "path.h"
+#include "fhandler.h"
+#include "dtable.h"
+#include "cygheap.h"
+#include "shared_info.h"
+#include "pinfo.h"
+#include <assert.h>
+#include <limits.h>
+
+int
+fhandler_nodevice::open (int, mode_t)
+{
+  set_errno (ENXIO);
+  return 0;
+}
+
+fhandler_nodevice::fhandler_nodevice ()
+{
+}