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/dialog.h

@@ -18,6 +18,8 @@
 
 WXDLLEXPORT_DATA(extern const char*) wxDialogNameStr;
 
+class WXDLLEXPORT wxEventLoop;
+
 // Dialog boxes
 class WXDLLEXPORT wxDialog : public wxDialogBase
 {
@@ -102,6 +104,7 @@ private:
 
     //// Motif-specific
     bool          m_modalShowing;
+    wxEventLoop*  m_eventLoop;
 
 protected:
     virtual void DoSetSize(int x, int y,