Reenable wxPalmOS status bar after recent changes. Start transition from faked drawing of the bar to usage of the native status bar. Source cleaning as usually.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@31531 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/window.h

@@ -452,7 +452,7 @@ public:
     virtual bool Enable( bool enable = true );
     bool Disable() { return Enable(false); }
 
-    bool IsShown() const { return m_isShown; }
+    virtual bool IsShown() const { return m_isShown; }
     bool IsEnabled() const { return m_isEnabled; }
 
         // get/set window style (setting style won't update the window and so