HIVE-8027: CBO: Bail out for LV, Unique Joins, PTF, TF…, Add annotations to UDFs (Laljo John Pullokkaran via Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/cbo@1623617 13f79535-47bb-0310-9956-ffa450edef68