OOZIE-1577 Oozie coordinator job with identical start and end time remains RUNNING forever (bowenzhangusa via rkanter)

git-svn-id: https://svn.apache.org/repos/asf/oozie/trunk@1533552 13f79535-47bb-0310-9956-ffa450edef68
OOZIE-1582 Bump up Tomcat version to 6.0.37 (rkanter)

git-svn-id: https://svn.apache.org/repos/asf/oozie/trunk@1533573 13f79535-47bb-0310-9956-ffa450edef68
OOZIE-1578 Coordinator jobs with cron frequency should be invalidated upon submission if nothing would be materialized during run time (bowenzhangusa via rkanter)

git-svn-id: https://svn.apache.org/repos/asf/oozie/trunk@1533657 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk