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/msw/webview_ie.h

@@ -143,7 +143,7 @@ public:
     void onActiveXEvent(wxActiveXEvent& evt);
     void onEraseBg(wxEraseEvent&) {}
 
-    DECLARE_EVENT_TABLE();
+    wxDECLARE_EVENT_TABLE();
 
 protected:
     virtual void DoSetPage(const wxString& html, const wxString& baseUrl);