Fixed import of configparser in the distutils module.

If configparser is unavailable, try to import configparser using its
old name. This is required for backward-compatibility with older
Python versions.
diff --git a/Lib/distutils/config.py b/Lib/distutils/config.py
index f1117be..35a21ec 100644
--- a/Lib/distutils/config.py
+++ b/Lib/distutils/config.py
@@ -5,7 +5,11 @@
 """
 import os
 import sys
-from ConfigParser import ConfigParser
+try:
+    from configparser import ConfigParser
+except ImportError:
+    # For backward-compatibility with Python versions < 2.6.
+    from ConfigParser import ConfigParser
 
 from distutils.cmd import Command