Change the way __hash__ is inherited; when __eq__ or __cmp__ is overridden
but __hash__ is not, set __hash__ explicitly to None (and tp_hash to NULL).
All unit tests pass now!
diff --git a/Include/object.h b/Include/object.h
index 1f1aeaa..ab42f8a 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -368,6 +368,7 @@
/* Generic operations on objects */
PyAPI_FUNC(int) PyObject_Print(PyObject *, FILE *, int);
+PyAPI_FUNC(void) _Py_Break(void);
PyAPI_FUNC(void) _PyObject_Dump(PyObject *);
PyAPI_FUNC(PyObject *) PyObject_Repr(PyObject *);
PyAPI_FUNC(PyObject *) _PyObject_Str(PyObject *);