Allow hive to integrate with existing user repositories for authentication and authorization infromation.
create script for the metastore upgrade due to HIVE-78
Cleanup from authorization
Optimize privilege checking for authorization
GRANT/REVOKE should handle privileges as tokens, not identifiers
Authentication Infrastructure for Hive
Make Hive work with Hadoop security
HIVE-78 Followup: group partitions by tables when do authorizations and there is no partition level privilege