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/pickerbase.h

@@ -181,7 +181,7 @@ protected:
     wxBoxSizer *m_sizer;
 
 private:
-    DECLARE_ABSTRACT_CLASS(wxPickerBase)
+    wxDECLARE_ABSTRACT_CLASS(wxPickerBase);
 };