Issue #1717: rename tp_compare to tp_reserved.  I'll change the
type of tp_compare in a separate commit, for ease of reversion
should things go wrong.
diff --git a/Objects/enumobject.c b/Objects/enumobject.c
index a76ba04..955bbdc 100644
--- a/Objects/enumobject.c
+++ b/Objects/enumobject.c
@@ -176,7 +176,7 @@
 	0,                              /* tp_print */
 	0,                              /* tp_getattr */
 	0,                              /* tp_setattr */
-	0,                              /* tp_compare */
+	0,                              /* tp_reserved */
 	0,                              /* tp_repr */
 	0,                              /* tp_as_number */
 	0,                              /* tp_as_sequence */
@@ -326,7 +326,7 @@
 	0,                              /* tp_print */
 	0,                              /* tp_getattr */
 	0,                              /* tp_setattr */
-	0,                              /* tp_compare */
+	0,                              /* tp_reserved */
 	0,                              /* tp_repr */
 	0,                              /* tp_as_number */
 	0,				/* tp_as_sequence */