svn merge -c 1507579 from branch-2 for HDFS-3880. Use Builder to build RPC server in HDFS.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.1-beta@1507580 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1507582 from branch-2 for YARN-84. Use Builder to build RPC server.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.1-beta@1507583 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1507259 from trunk for HADOOP-9756. Remove the deprecated getServer(..) methods from RPC.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.1-beta@1507590 13f79535-47bb-0310-9956-ffa450edef68