Merge r1337428 and r1337433 from branch-2 for HADOOP-8285 Use ProtoBuf for RpcPayLoadHeader


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.0.0-alpha@1338344 13f79535-47bb-0310-9956-ffa450edef68
32 files changed