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@1510612 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5061. Merge 1510611 from trunk

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1510626 13f79535-47bb-0310-9956-ffa450edef68
move HDFS-4962,HDFS-5043 to the right section in hadoop-hdfs/CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1510663 13f79535-47bb-0310-9956-ffa450edef68
move HADOOP-9806 to the right section in hadoop-common/CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1510669 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/branch-2' into branch-2-gd
Merge remote branch 'origin/branch-2-gd' into fb-YAHOO-218-branch-2-gd