HADOOP-9944. Fix RpcRequestHeaderProto.callId to be sint32 rather than uint32 since ipc.Client.CONNECTION_CONTEXT_CALL_ID is signed (i.e. -3). Contributed by Arun C. Murthy.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1523885 13f79535-47bb-0310-9956-ffa450edef68
Preparing for hadoop-2.1.1-beta release.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1523890 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9350. Moving to appropriate section in CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1523891 13f79535-47bb-0310-9956-ffa450edef68
Added ASL2 header to releasenotes.html.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1523900 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9669 Reduce the number of byte array creations and copies in XDR data manipulation. Contributed by Haohui Mai

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1524259 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5212. Refactor RpcMessage and NFS3Response to support different types of authentication information. Contributed by Jing Zhao.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1524298 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5487. In task processes, JobConf is unnecessarily loaded again in Limits (Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1524408 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5219. Add configuration keys for retry policy in WebHDFSFileSystem. Contributed by Haohui Mai.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1524498 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5031. BlockScanner scans the block multiple times. (Vinay via Arpit Agarwal)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1524553 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5122. Support failover and retry in WebHdfsFileSystem for NN HA. Contributed by Haohui Mai.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1524562 13f79535-47bb-0310-9956-ffa450edef68
Move HDFS-5122 from Release 2.1.1-beta to Release 2.3.0 in CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1524581 13f79535-47bb-0310-9956-ffa450edef68
Merging r1523878 through r1524586 from trunk to branch HDFS-2832

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1524590 13f79535-47bb-0310-9956-ffa450edef68