Implemented wxEventLoop for wxMotif, and used it in wxDialog::ShowModal,

wxWindow::DoPopupMenu and for the application main loop.
  Implemented wxWakeUpIdle.
  Fixed crash when a popup menu entry is used to close/destroy the parent
window of the menu.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@19078 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/motif/menu.h

@@ -93,7 +93,8 @@ public:
     WXWidget GetHandle() const { return m_menuWidget; }
     
     bool IsTearOff() const { return (m_style & wxMENU_TEAROFF) != 0; }
-    
+
+    void DestroyWidgetAndDetach();
 public:
     // Motif-specific data
     int               m_numColumns;