HIVE-6637: UDF in_file() doesn't take CHAR or VARCHAR as input (Ashish via Xuefu)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1610555 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7286: Parameterize HCatMapReduceTest for testing against all Hive
storage formats.