Updated CHANGES.txt to move MAPREDUCE-6126 to 2.6

hadoop-mapreduce-project/CHANGES.txt

@@ -224,9 +224,6 @@ Trunk (Unreleased)
 
     MAPREDUCE-6078. native-task: fix gtest build on macosx (Binglin Chang)
 
-    MAPREDUCE-6126. Fixed Rumen JobBuilder to ignore NormalizedResourceEvent.
-    (Junping Du via jianhe)
-
 Release 2.7.0 - UNRELEASED
 
   INCOMPATIBLE CHANGES
@@ -441,6 +438,9 @@ Release 2.6.0 - UNRELEASED
     MAPREDUCE-5542. Killing a job just as it finishes can generate an NPE in
     client (Rohith via jlowe)
 
+    MAPREDUCE-6126. Fixed Rumen JobBuilder to ignore NormalizedResourceEvent.
+    (Junping Du via jianhe)
+
 Release 2.5.1 - 2014-09-05
 
   INCOMPATIBLE CHANGES