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/Objects/weakrefobject.c b/Objects/weakrefobject.c
index 9c2a626..c55dd4c 100644
--- a/Objects/weakrefobject.c
+++ b/Objects/weakrefobject.c
@@ -349,7 +349,7 @@
     0,                          /*tp_getattro*/
     0,                          /*tp_setattro*/
     0,                          /*tp_as_buffer*/
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_HAVE_RICHCOMPARE
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC
         | Py_TPFLAGS_BASETYPE,  /*tp_flags*/
     0,                          /*tp_doc*/
     (traverseproc)gc_traverse,  /*tp_traverse*/
@@ -660,8 +660,7 @@
     proxy_getattr,                      /* tp_getattro */
     (setattrofunc)proxy_setattr,        /* tp_setattro */
     0,				        /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC
-    | Py_TPFLAGS_CHECKTYPES,            /* tp_flags */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
     0,                                  /* tp_doc */
     (traverseproc)gc_traverse,          /* tp_traverse */
     (inquiry)gc_clear,                  /* tp_clear */
@@ -695,8 +694,7 @@
     proxy_getattr,                      /* tp_getattro */
     (setattrofunc)proxy_setattr,        /* tp_setattro */
     0,				        /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC
-    | Py_TPFLAGS_CHECKTYPES,            /* tp_flags */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
     0,                                  /* tp_doc */
     (traverseproc)gc_traverse,          /* tp_traverse */
     (inquiry)gc_clear,                  /* tp_clear */