1. derived wxMSW radio box from static box because it includes the box anyhow

2. changed it to use wxSubwindows to cut down code duplication
3. deprecated Get/SetNumberOfRowsOrCols() which didn't do anything in neither
   MSW nor GTK (this is the only change in GTK code)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@30980 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/radiobox.cpp

@@ -648,16 +648,6 @@ int wxRadioBox::GetCount() const
     return m_boxes.GetCount();
 }
 
-int wxRadioBox::GetNumberOfRowsOrCols() const
-{
-    return 1;
-}
-
-void wxRadioBox::SetNumberOfRowsOrCols( int WXUNUSED(n) )
-{
-    wxFAIL_MSG(wxT("wxRadioBox::SetNumberOfRowsOrCols not implemented."));
-}
-
 void wxRadioBox::GtkDisableEvents()
 {
     wxList::compatibility_iterator node = m_boxes.GetFirst();