Starting to fix chukwa's CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/core/trunk@740234 13f79535-47bb-0310-9956-ffa450edef68

src/contrib/chukwa/CHANGES.txt

@@ -6,18 +6,20 @@ Trunk (unreleased changes)
 
   IMPROVEMENTS
 
-    HADOOP-4431. Add versionning/tags to Chukwa Chunk. 
-    (Jerome Boulon via Johan)
-
-    HADOOP-4433. Improve data loader for collecting metrics and log files.
-    (Eric Yang via omalley)
-
   OPTIMIZATIONS
 
   BUG FIXES
 
 Release 0.19.0 - Unreleased
 
+  IMPROVEMENTS
+
+    HADOOP-4431. Add versionning/tags to Chukwa Chunk. 
+    (Jerome Boulon via Johan)
+
+    HADOOP-4433. Improve data loader for collecting metrics and log files.
+    (Eric Yang via omalley)
+
   NEW FEATURES
 
     HADOOP-3719. Initial checkin of Chukwa, which is a data collection and