Deprecate the multifile module as per PEP 4.

Lib/multifile.py

@@ -26,6 +26,10 @@ it normally attempts in order to make seeks relative to the beginning of the
 current file part.  This may be useful when using MultiFile with a non-
 seekable stream object.
 """
+from warnings import warn
+warn("the multifile module has been deprecated since Python 2.5",
+        DeprecationWarning, stacklevel=2)
+del warn
 
 __all__ = ["MultiFile","Error"]
 

Lib/test/test_multifile.py

+from test import test_support
 import mimetools
-import multifile
+multifile = test_support.import_module('multifile', deprecated=True)
 import cStringIO
 
 msg = """Mime-Version: 1.0

Misc/NEWS

@@ -26,6 +26,8 @@ Extension Modules
 Library
 -------
 
+- The multifile module has been deprecated as per PEP 4.
+
 - The SocketServer module has been renamed 'socketserver'.  The old
   name is now deprecated.