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/gtk1/slider.h

@@ -67,7 +67,7 @@ public:
     float           m_oldPos;
 
 private:
-    DECLARE_DYNAMIC_CLASS(wxSlider)
+    wxDECLARE_DYNAMIC_CLASS(wxSlider);
 };
 
 #endif // __GTKSLIDERH__