ClassIDs are now actually typeinfo name pointers.

I'll see, next, about the `instanceOf` thing, and going with
more normal RTTI routes.

dw/textblock.hh

@@ -864,7 +864,7 @@ protected:
    int getGeneratorRest (int oofmIndex);
 
 public:
-   static int CLASS_ID;
+   static std::intptr_t CLASS_ID;
 
    static void setPenaltyHyphen (int penaltyHyphen);
    static void setPenaltyHyphen2 (int penaltyHyphen2);