HIVE-5223 : explain doesn't show serde used for table (Ashutosh Chauhan via Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1526116 13f79535-47bb-0310-9956-ffa450edef68
HIVE-5279 : Kryo cannot instantiate GenericUDAFEvaluator in GroupByDesc (Navis via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1526117 13f79535-47bb-0310-9956-ffa450edef68