Update compatibility comments to 2.1, corresponding to PEP 291 1.13.
diff --git a/Lib/distutils/archive_util.py b/Lib/distutils/archive_util.py
index 55babe6..6aa5e63 100644
--- a/Lib/distutils/archive_util.py
+++ b/Lib/distutils/archive_util.py
@@ -3,7 +3,7 @@
 Utility functions for creating archive files (tarballs, zip files,
 that sort of thing)."""
 
-# This module should be kept compatible with Python 1.5.2.
+# This module should be kept compatible with Python 2.1.
 
 __revision__ = "$Id$"