type_call():  Change in policy.  The keyword args (if any) are now passed
on to the tp_new slot (if non-NULL), as well as to the tp_init slot (if
any).  A sane type implementing both tp_new and tp_init should probably
pay attention to the arguments in only one of them.
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 430e68c..0d154d9 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -151,7 +151,7 @@
 		return NULL;
 	}
 
-	obj = type->tp_new(type, args, NULL);
+	obj = type->tp_new(type, args, kwds);
 	if (obj != NULL) {
 		type = obj->ob_type;
 		if (type->tp_init != NULL &&