Add comment to Distutil files about requiring 1.5.2 compatibility, as
    suggested by PEP 291.
diff --git a/Lib/distutils/command/bdist.py b/Lib/distutils/command/bdist.py
index e0648f3..7c606ff 100644
--- a/Lib/distutils/command/bdist.py
+++ b/Lib/distutils/command/bdist.py
@@ -3,6 +3,8 @@
 Implements the Distutils 'bdist' command (create a built [binary]
 distribution)."""
 
+# This module should be kept compatible with Python 1.5.2.
+
 __revision__ = "$Id$"
 
 import os, string