HIVE-5191: Add char data type (Jason via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1539530 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5655: Hive incorrecly handles divide-by-zero case (reviewed by Edward and Brock)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1539531 13f79535-47bb-0310-9956-ffa450edef68