SF patch #820195 by Wojtek Walczak (gminick at users.sourceforge.net):
make obj.__contains__() returns True/False instead of 1/0.
diff --git a/Misc/NEWS b/Misc/NEWS
index 5a8379e..8662f10 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -30,6 +30,9 @@
 - zip() with no arguments now returns an empty list instead of raising
   a TypeError exception.
 
+- obj.__contains__() now returns True/False instead of 1/0.  SF patch
+  820195.
+
 Extension modules
 -----------------