The email module's parsedate_tz function now sets the daylight savings
flag to -1 (unknown) since it can't tell from the date whether it should
be set.
patch from Aldo Cortesi
diff --git a/Misc/NEWS b/Misc/NEWS
index fa162f5..cb99814 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -491,6 +491,10 @@
 Library
 -------
 
+- The email module's parsedate_tz function now sets the daylight savings
+  flag to -1 (unknown) since it can't tell from the date whether it should
+  be set.
+
 - Patch #624325: urlparse.urlparse() and urlparse.urlsplit() results
   now sport attributes that provide access to the parts of the result.