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-0.23@1491921 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/branch-0.23' into branch-0.23-gd
Merge remote branch 'origin/branch-0.23-gd' into fb-HADOOP-9063-branch-0.23-gd