add py3k warnings to rfc822
diff --git a/Doc/library/rfc822.rst b/Doc/library/rfc822.rst
index 37fef78..4c938f5 100644
--- a/Doc/library/rfc822.rst
+++ b/Doc/library/rfc822.rst
@@ -9,7 +9,8 @@
.. deprecated:: 2.3
The :mod:`email` package should be used in preference to the :mod:`rfc822`
- module. This module is present only to maintain backward compatibility.
+ module. This module is present only to maintain backward compatibility, and
+ has been removed in 3.0.
This module defines a class, :class:`Message`, which represents an "email
message" as defined by the Internet standard :rfc:`2822`. [#]_ Such messages