Added wxWakeUpIdle() to wxGTK,

Changed wxFindFile to detect hidden files (but not "." and ".." as before),
  Added "show hidden files" to file dialog,
  Added controls to wxToolBar,
  doc view now uses pretty file dialogs as per MSW.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4553 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/app.h

@@ -310,6 +310,11 @@ extern void WXDLLEXPORT wxExit();
 // Yield to other apps/messages
 extern bool WXDLLEXPORT wxYield();
 
+#ifdef __WXGTK__
+// Yield to other apps/messages
+extern void WXDLLEXPORT wxWakeUpIdle();
+#endif
+
 // Post a message to the given eventhandler which will be processed during the
 // next event loop iteration
 inline void WXDLLEXPORT wxPostEvent(wxEvtHandler *dest, wxEvent& event)