Fix for TextCtrl problem as reported by Vegh

Move definition of wxMenuItem to /gtk/menuitem.h
  Radical change of how to insert a child into a
    paren window. As C++ doesn't have any VMT in
    a class's consructor, I have to use a callback.
  Fixed culumn resizing bug in wxListCtrl
  Fixed menu height bug in MDI code


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@955 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk1/radiobut.cpp

@@ -60,6 +60,9 @@ bool wxRadioButton::Create( wxWindow *parent, wxWindowID id, const wxString& lab
   gtk_signal_connect( GTK_OBJECT(m_widget), "clicked", 
     GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
        
+  gtk_myfixed_put( GTK_MYFIXED(m_parent->m_wxwindow), m_widget, m_x, m_y );
+  gtk_widget_set_usize( m_widget, m_width, m_height );
+  
   PostCreation();
 
   SetBackgroundColour( parent->GetBackgroundColour() );