Add new ADD_RAW_IID OLE helper macro to allow use with classes that do not start with IID_I.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70095 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/ole/oleutils.h

@@ -143,6 +143,7 @@ private:
 // NB: you should write ADD_INTERFACE(Foo) and not ADD_INTERFACE(IID_IFoo)!
 #define BEGIN_IID_TABLE(cname)  const IID *cname::ms_aIids[] = {
 #define ADD_IID(iid)                                             &IID_I##iid,
+#define ADD_RAW_IID(iid)                                         &::iid,
 #define END_IID_TABLE                                          }
 
 // implementation is as straightforward as possible