Adds the ipaddr module to the standard library.  Issue #3959.
Based off of subversion r69 from http://code.google.com/p/ipaddr-py/

This code is 2to3 safe, I'll merge it into py3k later this afternoon.
diff --git a/Misc/NEWS b/Misc/NEWS
index 75d81fc..d2dcadd 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -261,6 +261,9 @@
 Library
 -------
 
+- Issue #3959: The ipaddr module has been added to the standard library.
+  Contributed by Google.
+
 - Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
 
 - Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive