Note addition of cleanfuture.py

Doc/whatsnew/whatsnew22.tex

@@ -737,6 +737,12 @@ changes are:
   
   \item The code for the Mac OS port for Python, maintained by Jack
   Jansen, is now kept in the main Python CVS tree.
+  % XXX should expand this with all of Jack's recent changes (ask him for 
+  % a summary)        
+  
+  \item A new script, \file{Tools/scripts/cleanfuture.py} by Tim
+  Peters, automatically removes obsolete \code{__future__} statements
+  from Python source code.
 
   \item The new license introduced with Python 1.6 wasn't
   GPL-compatible.  This is fixed by some minor textual changes to the