Added header vs. library version check to configure,

Fixed problem in wxTreeCtrl when nothing was selected
   upon startup and tabbing into it crashed.
 I understood now what filterindex in file dialog means.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4582 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/filedlgg.cpp

@@ -709,6 +709,7 @@ void wxFileDialog::OnChoice( wxCommandEvent &event )
 {
     wxString *str = (wxString*) m_choice->GetClientData( event.GetInt() );
     m_list->SetWild( *str );
+    m_filterIndex = event.GetInt();
 }
 
 void wxFileDialog::OnCheck( wxCommandEvent &event )