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.

src/gtk/taskbar.cpp

@@ -284,7 +284,7 @@ void wxTaskBarIcon::Private::size_allocate(int width, int height)
 #endif
 //-----------------------------------------------------------------------------
 
-IMPLEMENT_DYNAMIC_CLASS(wxTaskBarIcon, wxEvtHandler)
+wxIMPLEMENT_DYNAMIC_CLASS(wxTaskBarIcon, wxEvtHandler);
 
 wxTaskBarIcon::wxTaskBarIcon(wxTaskBarIconType WXUNUSED(iconType))
 {