HADOOP-4688. Update CHANGES.txt for moving this back to 0.18.3.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/core/trunk@719651 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -121,9 +121,6 @@ Trunk (unreleased changes)
     it down by monitoring for cumulative memory usage across tasks.
     (Vinod Kumar Vavilapalli via yhemanth)
 
-    HADOOP-4668. Improve documentation for setCombinerClass to clarify the
-    restrictions on combiners. (omalley)
-
   OPTIMIZATIONS
 
     HADOOP-3293. Fixes FileInputFormat to do provide locations for splits
@@ -1173,6 +1170,9 @@ Release 0.18.3 - Unreleased
     HADOOP-4150. Include librecordio in hadoop releases. (Giridharan Kesavan
     via acmurthy)
 
+    HADOOP-4668. Improve documentation for setCombinerClass to clarify the
+    restrictions on combiners. (omalley)
+
   BUG FIXES
 
     HADOOP-4499. DFSClient should invoke checksumOk only once. (Raghu Angadi)