fixes bug 848680 - add pig support to crontabber
Merge pull request #1121 from peterbe/bug848680-add-pig-support-to-crontabber

bug 848680 - add pig support to crontabber
bug 870286 - clean up role creation

* Separate ALTER TABLE ... OWNER TO for each relation type
* Fix many tests
* Separate super user role from normal user roles
* Add a superuser to sql/roles.sql
* Add deprecation notices for old postgres related tests