Use wx-prefixed macros throughout the repository.

Change {DECLARE,IMPLEMENT}_*CLASS and {DECLARE,BEGIN,END}_EVENT_TABLE
occurrences to use the wx-prefixed version of the macros.

include/wx/univ/slider.h

@@ -220,8 +220,8 @@ private:
     // the state of the thumb (wxCONTROL_XXX constants sum)
     int m_thumbFlags;
 
-    DECLARE_EVENT_TABLE()
-    DECLARE_DYNAMIC_CLASS(wxSlider)
+    wxDECLARE_EVENT_TABLE();
+    wxDECLARE_DYNAMIC_CLASS(wxSlider);
 };
 
 #endif // _WX_UNIV_SLIDER_H_