OOZIE-1237 Bump up trunk to 4.0.0-SNAPSHOT (virag)

git-svn-id: https://svn.apache.org/repos/asf/oozie/trunk@1449894 13f79535-47bb-0310-9956-ffa450edef68
Merging hcat-intre to trunk

git-svn-id: https://svn.apache.org/repos/asf/oozie/trunk@1449911 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd