* dtable.cc (dtable::init_std_file_from_handle): Set access to

read/write of handle is connected to a tty or console.
	* fhandler_dsp.cc (fhandler_dev_dsp::dup): Set open flags correctly
	after duplicating from archetype.
	* fhandler_tty.cc (fhandler_tty_slave::dup): Ditto.
	(fhandler_pty_master::dup): Ditto.

winsup/cygwin/fhandler_dsp.cc

@@ -1131,6 +1131,7 @@ fhandler_dev_dsp::dup (fhandler_base * child)
 {
   debug_printf ("");
   child->archetype = archetype;
+  child->set_flags (get_flags ());
   archetype->usecount++;
   return 0;
 }