change abstract size functions PySequence_Size &c.
add macros for backwards compatibility with C source
diff --git a/Objects/object.c b/Objects/object.c
index 9194c90..0c50175 100644
--- a/Objects/object.c
+++ b/Objects/object.c
@@ -958,7 +958,7 @@
 
 
 /* Hack to force loading of abstract.o */
-int (*_Py_abstract_hack)(PyObject *) = &PyObject_Length;
+int (*_Py_abstract_hack)(PyObject *) = &PyObject_Size;
 
 
 /* Python's malloc wrappers (see mymalloc.h) */