the tpp_hasnext/__hasnext__ changes require us to be able to __call__...

the tpp_hasnext/__hasnext__ changes require us to be able to __call__ descriptors for wrapped pyston methods.  this shouldn't be a problem, though, at least for tpp_hasnext

src/capi/types.h

@@ -139,7 +139,7 @@ public:
         if (flags == PyWrapperFlag_KEYWORDS) {
             wrapperfunc_kwds wk = (wrapperfunc_kwds)wrapper;
             rtn = (*wk)(self->obj, args, self->descr->wrapped, kwds);
-        } else if (flags == 0) {
+        } else if (flags == PyWrapperFlag_PYSTON || flags == 0) {
             rtn = (*wrapper)(self->obj, args, self->descr->wrapped);
         } else {
             RELEASE_ASSERT(0, "%d", flags);