insert NEW-FEATURES section onto trunk

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1206517 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -3,7 +3,9 @@ Hadoop Change Log
 Trunk (unreleased changes)
 
   INCOMPATIBLE CHANGES
-   
+
+  NEW FEATURES
+
   IMPROVEMENTS
 
     HADOOP-7595. Upgrade dependency to Avro 1.5.3. (Alejandro Abdelnur via atm)