_Py_PrintReferences():  Changed to print object address at start of each
new line.

New pvt API function _Py_PrintReferenceAddresses():  Prints only the
addresses and refcnts of the live objects.  This is always safe to call,
because it has no dependence on Python's C API.

Py_Finalize():  If envar PYTHONDUMPREFS is set, call (the new)
_Py_PrintReferenceAddresses() right before dumping final pymalloc stats.
We can't print the reprs of the objects here because too much of the
interpreter has been shut down.  You need to correlate the addresses
displayed here with the object reprs printed by the earlier
PYTHONDUMPREFS call to _Py_PrintReferences().
diff --git a/Include/object.h b/Include/object.h
index 3ac7538..3c7264f 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -582,6 +582,7 @@
 PyAPI_FUNC(void) _Py_ForgetReference(PyObject *);
 PyAPI_FUNC(void) _Py_Dealloc(PyObject *);
 PyAPI_FUNC(void) _Py_PrintReferences(FILE *);
+PyAPI_FUNC(void) _Py_PrintReferenceAddresses(FILE *);
 PyAPI_FUNC(void) _Py_AddToAllObjects(PyObject *, int force);
 
 #else