HADOOP-4234 Moving updates in CHANGES.txt from BUG to IMPROVEMENTS.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/core/trunk@698677 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -8,13 +8,13 @@ Trunk (unreleased changes)
 
   IMPROVEMENTS
 
+    HADOOP-4234. Fix KFS "glue" layer to allow applications to interface
+    with multiple KFS metaservers. (Sriram Rao via lohit)
+
   OPTIMIZATIONS
 
   BUG FIXES
 
-    HADOOP-4234. Fix KFS "glue" layer to allow applications to interface
-    with multiple KFS metaservers. (Sriram Rao via lohit)
-
 		HADOOP-4245. Update to latest version of KFS "glue" library jar. 
 		(Sriram Rao via lohit)