Move MAPREDUCE-4645 under 0.23.4 release section in CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1389576 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -126,9 +126,6 @@ Trunk (Unreleased)
 
     MAPREDUCE-3868. Make Raid Compile. (Weiyan Wang via schen)
 
-    MAPREDUCE-4645. Provide a random seed to Slive to make the sequence
-    of file names deterministic. (Ravi Prakash via shv)
-
 Release 2.0.3-alpha - Unreleased 
 
   INCOMPATIBLE CHANGES
@@ -536,6 +533,9 @@ Release 0.23.4 - UNRELEASED
 
   IMPROVEMENTS
 
+    MAPREDUCE-4645. Provide a random seed to Slive to make the sequence
+    of file names deterministic. (Ravi Prakash via shv)
+
   OPTIMIZATIONS
 
   BUG FIXES