YARN-994. HeartBeat thread in AMRMClientAsync does not handle runtime exception correctly (Xuan Gong via bikas)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1510070 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9802: include java.library.path for commands launched from yarn.cmd
Merge branch 'trunk' into HADOOP-9802-trunk