* exceptions.cc (setup_handler): Always relinquish lock after we've

interrupted.
* fhandler.cc: Move pipe methods to pipe.cc.
* fhandler.h (fhandler_pipe): Add new methods.
* fork.cc (sync_with_parent): Make error messages more informative.
* pipe.cc (fhandler_pipe::fhandler_pipe): Move here from fhandler.cc.
(fhandler_pipe::lseek): Ditto.
(fhandler_pipe::set_close_on_exec): New method.
(fhandler_pipe::read): Ditto.
(fhandler_pipe::close): Ditto.
(fhandler_pipe::dup): Ditto.
(make_pipe): Create the guard mutex on the read side of the pipe.
* select.cc (peek_pipe): Use guard_mutex to discover if we have the right to
read on this pipe.
(fhandler_pipe::readh_for_read): Pass the read pipe guard mutex to peek_pipe.
* syscalls.cc (_read): Always detect signal catchers, for now.
* debug.cc (makethread): Eliminate hack to make thread inheritable.
* sigproc.cc (subproc_init): Don't use hack to make thread inheritable.

winsup/cygwin/sigproc.cc

@@ -819,7 +819,7 @@ subproc_init (void)
    * the hchildren array.
    */
   events[0] = CreateEvent (&sec_none_nih, FALSE, FALSE, NULL);
-  if (!(hwait_subproc = makethread (wait_subproc, NULL, 0, "+proc")))
+  if (!(hwait_subproc = makethread (wait_subproc, NULL, 0, "proc")))
     system_printf ("cannot create wait_subproc thread, %E");
   ProtectHandle (events[0]);
   ProtectHandle (hwait_subproc);