HIVE-5564: Need to accomodate table decimal columns that were defined prior to HIVE-3976 (Reviewed by Brock)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1542643 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5825: Case statement type checking too restrictive for parameterized types (Jason via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1542646 13f79535-47bb-0310-9956-ffa450edef68