Added clear cache methods to clear the internal type lookup cache for ref leak test runs.
diff --git a/Include/object.h b/Include/object.h
index 7294158..65440a6 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -399,6 +399,7 @@
PyAPI_FUNC(PyObject *) PyType_GenericNew(PyTypeObject *,
PyObject *, PyObject *);
PyAPI_FUNC(PyObject *) _PyType_Lookup(PyTypeObject *, PyObject *);
+PyAPI_FUNC(unsigned int) PyType_ClearCache(void);
/* Generic operations on objects */
PyAPI_FUNC(int) PyObject_Print(PyObject *, FILE *, int);