HCATALOG-509 Webhcat security work


git-svn-id: https://svn.apache.org/repos/asf/incubator/hcatalog/trunk@1433688 13f79535-47bb-0310-9956-ffa450edef68
HCATALOG-546 Rework HCatalog's JMS Notifications

git-svn-id: https://svn.apache.org/repos/asf/incubator/hcatalog/trunk@1433798 13f79535-47bb-0310-9956-ffa450edef68