Make sets.py compatible with Py2.2
diff --git a/Misc/NEWS b/Misc/NEWS
index 63827d2..a3a62be 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -30,6 +30,8 @@
 Library
 -------
 
+- sets.py now runs under Py2.2
+
 - random.seed() with no arguments or None uses time.time() as a default
   seed.  Modified to match Py2.2 behavior and use fractional seconds so
   that successive runs are more likely to produce different sequences.