Preparing for release 0.23.0.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1195838 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -92,7 +92,7 @@ Trunk (unreleased changes)
     HADOOP-7773. Add support for protocol buffer based RPC engine.
     (suresh)
 
-Release 0.23.0 - Unreleased
+Release 0.23.0 - 2011-10-31 
 
   INCOMPATIBLE CHANGES
 

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

@@ -85,7 +85,7 @@ Trunk (unreleased changes)
 
     HDFS-2497 Fix TestBackupNode failure. (suresh)
 
-Release 0.23.0 - Unreleased
+Release 0.23.0 - 2011-10-31 
 
   INCOMPATIBLE CHANGES
 

hadoop-mapreduce-project/CHANGES.txt

@@ -50,7 +50,7 @@ Trunk (unreleased changes)
     MAPREDUCE-3014. Rename and invert logic of '-cbuild' profile to 'native' and off 
     by default. (tucu)
 
-Release 0.23.0 - Unreleased
+Release 0.23.0 - 2011-10-31 
 
   INCOMPATIBLE CHANGES