moved XML classes to the core

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@22178 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

contrib/include/wx/xrc/xmlres.h

@@ -26,7 +26,15 @@
 #include "wx/icon.h"
 #include "wx/artprov.h"
 
-#include "wx/xrc/xml.h"
+#include "wx/xml/xml.h"
+
+#ifdef WXMAKINGDLL_XRC
+    #define WXDLLIMPEXP_XRC WXEXPORT
+#elif defined(WXUSINGDLL)
+    #define WXDLLIMPEXP_XRC WXIMPORT
+#else // not making nor using DLL
+    #define WXDLLIMPEXP_XRC
+#endif
 
 class WXDLLEXPORT wxMenu;
 class WXDLLEXPORT wxMenuBar;