svn merge -c 1491914 FIXES: MAPREDUCE-5315.  DistCp reports success even on failure. (mithun and jlowe via daryn)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.1-beta@1491919 13f79535-47bb-0310-9956-ffa450edef68