MAPREDUCE-5550. Task Status message (reporter.setStatus) not shown in UI with Hadoop 2.0 (Gera Shegalov via Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1552809 13f79535-47bb-0310-9956-ffa450edef68