OOZIE-1209 Event generation and handling for workflow and coordinator (mona)

git-svn-id: https://svn.apache.org/repos/asf/oozie/trunk@1466307 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-YAHOO-296-trunk-gd