Get rid of most of the flags (in tp_flags) that keep track of various
variations of the type struct and its attachments.  In Py3k, all type
structs have to have all fields -- no binary backwards compatibility.
Had to change the complex object to a new-style number!
diff --git a/Modules/collectionsmodule.c b/Modules/collectionsmodule.c
index c7e2c85..0c7dca6 100644
--- a/Modules/collectionsmodule.c
+++ b/Modules/collectionsmodule.c
@@ -846,8 +846,8 @@
 	PyObject_GenericGetAttr,	/* tp_getattro */
 	0,				/* tp_setattro */
 	0,				/* tp_as_buffer */
-	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC |
-		Py_TPFLAGS_HAVE_WEAKREFS,	/* tp_flags */
+	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
+		 Py_TPFLAGS_HAVE_GC,	/* tp_flags */
 	deque_doc,			/* tp_doc */
 	(traverseproc)deque_traverse,	/* tp_traverse */
 	(inquiry)deque_clear,		/* tp_clear */
@@ -1299,8 +1299,8 @@
 	PyObject_GenericGetAttr,	/* tp_getattro */
 	0,				/* tp_setattro */
 	0,				/* tp_as_buffer */
-	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC |
-		Py_TPFLAGS_HAVE_WEAKREFS,	/* tp_flags */
+	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
+		Py_TPFLAGS_HAVE_GC,	/* tp_flags */
 	defdict_doc,			/* tp_doc */
 	defdict_traverse,		/* tp_traverse */
 	(inquiry)defdict_tp_clear,	/* tp_clear */