YARN-1386. NodeManager mistakenly loses resources and relocalizes them (Jason Lowe via jeagles)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1541375 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5485. add command-line support for modifyDirective (cmccabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1541377 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HDFS-4310-trunk-gd