HADOOP-9961. versions of a few transitive dependencies diverged between hadoop subprojects. (rvs via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1523596 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9962. in order to avoid dependency divergence within Hadoop itself lets enable DependencyConvergence. (rvs via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1523599 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5379. Include token tracking ids in jobconf. (kkambatl via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1523605 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-YAHOO-270-trunk-gd