Update CHANGES.txt to reflect the back-port of HDFS-2764 from trunk to branch-0.23.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1242554 13f79535-47bb-0310-9956-ffa450edef68

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -197,8 +197,6 @@ Trunk (unreleased changes)
     HDFS-2759. Pre-allocate HDFS edit log files after writing version number.
     (atm)
 
-    HDFS-2764. TestBackupNode is racy. (atm)
-
     HDFS-2908. Add apache license header for StorageReport.java. (Brandon Li
     via jitendra)
 
@@ -221,6 +219,7 @@ Release 0.23.2 - UNRELEASED
     HDFS-2923. Namenode IPC handler count uses the wrong configuration key
     (todd)
 
+    HDFS-2764. TestBackupNode is racy. (atm)
 
 Release 0.23.1 - 2012-02-08