Make Py3k warnings consistent w.r.t. punctuation; also respect the
EOL 80 limit and supply more alternatives in warning messages.
diff --git a/Objects/listobject.c b/Objects/listobject.c
index d4faf0a..81617e4 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -2040,7 +2040,7 @@
if (compare != NULL &&
Py_Py3kWarningFlag &&
PyErr_Warn(PyExc_DeprecationWarning,
- "In 3.x, the cmp argument is no longer supported.") < 0)
+ "the cmp argument is not supported in 3.x") < 0)
return NULL;
if (keyfunc == Py_None)
keyfunc = NULL;