Revised the entry for HDFS-2318 in CHANGES.txt.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1171615 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -13,7 +13,8 @@ Trunk (unreleased changes)
     HDFS-2338. Add configuration option to enable/disable webhdfs.
     (jitendra via szetszwo)
 
-    HDFS-2318. Provide authentication to webhdfs using SPNEGO.  (szetszwo)
+    HDFS-2318. Provide authentication to webhdfs using SPNEGO and delegation
+    tokens.  (szetszwo)
 
   IMPROVEMENTS