Update compatibility comments to 2.1, corresponding to PEP 291 1.13.
diff --git a/Lib/distutils/debug.py b/Lib/distutils/debug.py
index 2a87eb5..b67139c 100644
--- a/Lib/distutils/debug.py
+++ b/Lib/distutils/debug.py
@@ -1,6 +1,6 @@
 import os
 
-# This module should be kept compatible with Python 1.5.2.
+# This module should be kept compatible with Python 2.1.
 
 __revision__ = "$Id$"