* implemented VZ's idea about creating and destroying bg threads.

(PB with the destruction of waiter: I think it's a race problem but
   I can't localize it if someone finds it please mail it to me)
* Fixed race condition in threadpsx.cpp.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2364 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/unix/threadpsx.cpp

@@ -675,10 +675,10 @@ void wxThread::Exit(void *status)
 
     // next wake up the threads waiting for us (OTOH, this function won't return
     // until someone waited for us!)
-    p_internal->SignalExit();
-
     p_internal->SetState(STATE_EXITED);
 
+    p_internal->SignalExit();
+
     // delete both C++ thread object and terminate the OS thread object
     // GL: This is very ugly and buggy ...
 //    delete this;