Fix CHANGES.txt. Some changes have been committed under 0.21.1 section rather than 0.22.0.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1207706 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -2065,6 +2065,15 @@ Release 0.21.1 - Unreleased
     HDFS-1823. start-dfs.sh script fails if HADOOP_HOME is not set.
     (tomwhite via eli)
 
+    HDFS-1786. Some cli test cases expect a "null" message
+    (Uma Maheswara Rao G via todd)
+
+    HDFS-1855. TestDatanodeBlockScanner.testBlockCorruptionRecoveryPolicy()
+    part 2 fails in two different ways. (Matt Foley via eli)
+
+    HDFS-2346. TestHost2NodesMap & TestReplicasMap will fail depending upon
+    execution order of test methods (Laxman, Uma Maheswara Rao G via shv)
+
 Release 0.21.1 - Unreleased
 
     HDFS-1411. Correct backup node startup command in hdfs user guide.
@@ -2114,19 +2123,9 @@ Release 0.21.1 - Unreleased
     block placement and checkpoint/backup node features.  (Joe Crobak
     via szetszwo)
 
-
     HDFS-1596. Replace fs.checkpoint.* with dfs.namenode.checkpoint.*
     in documentations.  (Harsh J Chouraria via szetszwo)
 
-    HDFS-1786. Some cli test cases expect a "null" message
-    (Uma Maheswara Rao G via todd)
-
-    HDFS-1855. TestDatanodeBlockScanner.testBlockCorruptionRecoveryPolicy()
-    part 2 fails in two different ways. (Matt Foley via eli)
-
-    HDFS-2346. TestHost2NodesMap & TestReplicasMap will fail depending upon
-    execution order of test methods (Laxman, Uma Maheswara Rao G via shv)
-
 Release 0.21.0 - 2010-08-13
 
   INCOMPATIBLE CHANGES