MAPREDUCE-5367. Local jobs all use same local working directory (Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.1-beta@1510614 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5061. Merge 1510626 from branch-2

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.1-beta@1510629 13f79535-47bb-0310-9956-ffa450edef68