* DevNotes: Add entry cgf-000018.

* init.cc (dll_entry): Grab process lock before exiting to ensure that thread
doesn't exit before parent if parent is exiting.
* _cygtls.cc (_cygtls::call2): Revert previous 2012-12-21 change.
* miscfuncs.cc (thread_wrapper): Ditto.
* thread.cc (pthread::exit): Ditto.
* sigproc.cc (exit_thread): Ditto.
(wait_sig): Ditto.
* sync.cc (muto::release): Ditto.
* sync.h (muto::release): Ditto.
* sigproc.h (__SIGTHREADEXIT): Delete enum.
(exit_thread): Delete declaration.

winsup/cygwin/thread.cc

@@ -532,7 +532,7 @@ pthread::exit (void *value_ptr)
 	  _main_tls = dummy;
 	  _main_tls->initialized = false;
 	}
-      exit_thread (0);
+      ExitThread (0);
     }
 }