HIVE-5684: Serde support for char (Jason via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1546475 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5893: hive-schema-0.13.0.mysql.sql contains reference to nonexistent column (Carl via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1546476 13f79535-47bb-0310-9956-ffa450edef68