Supply code objects a new-style tp_members slot and tp_getattr impl.

The chief effects are to make dir() do something useful and supply
them with an __class__.

Python/compile.c

@@ -91,12 +91,6 @@ static struct memberlist code_memberlist[] = {
 	{NULL}	/* Sentinel */
 };
 
-static PyObject *
-code_getattr(PyCodeObject *co, char *name)
-{
-	return PyMember_Get((char *)co, code_memberlist, name);
-}
-
 static void
 code_dealloc(PyCodeObject *co)
 {
@@ -189,16 +183,40 @@ PyTypeObject PyCode_Type = {
 	"code",
 	sizeof(PyCodeObject),
 	0,
-	(destructor)code_dealloc, /*tp_dealloc*/
-	0,	/*tp_print*/
-	(getattrfunc)code_getattr, /*tp_getattr*/
-	0,		/*tp_setattr*/
-	(cmpfunc)code_compare, /*tp_compare*/
-	(reprfunc)code_repr, /*tp_repr*/
-	0,		/*tp_as_number*/
-	0,		/*tp_as_sequence*/
-	0,		/*tp_as_mapping*/
-	(hashfunc)code_hash, /*tp_hash*/
+	(destructor)code_dealloc, 	/* tp_dealloc */
+	0,				/* tp_print */
+	0, 				/* tp_getattr */
+	0,				/* tp_setattr */
+	(cmpfunc)code_compare, 		/* tp_compare */
+	(reprfunc)code_repr,		/* tp_repr */
+	0,				/* tp_as_number */
+	0,				/* tp_as_sequence */
+	0,				/* tp_as_mapping */
+	(hashfunc)code_hash, 		/* tp_hash */
+	0,				/* tp_call */
+	0,				/* tp_str */
+	PyObject_GenericGetAttr,	/* tp_getattro */
+	0,				/* tp_setattro */
+	0,				/* tp_as_buffer */
+	Py_TPFLAGS_DEFAULT,		/* tp_flags */
+	0,				/* tp_doc */
+	0,				/* tp_traverse */
+	0,				/* tp_clear */
+	0,				/* tp_richcompare */
+	0,				/* tp_weaklistoffset */
+	0,				/* tp_iter */
+	0,				/* tp_iternext */
+	0,				/* tp_methods */
+	code_memberlist,		/* tp_members */
+	0,				/* tp_getset */
+	0,				/* tp_base */
+	0,				/* tp_dict */
+	0,				/* tp_descr_get */
+	0,				/* tp_descr_set */
+	0,				/* tp_dictoffset */
+	0,				/* tp_init */
+	0,				/* tp_alloc */
+	0,				/* tp_new */
 };
 
 #define NAME_CHARS \