HIVE-7423: produce hive-exec-core.jar from ql module (Eugene Koifman via Daniel Dai)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1611233 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7412 : column stats collection throws exception if all values for a column is null (Ashutosh Chauhan via Gunther Hagleitner, Navis)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1611234 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7363: VectorExpressionWriterDecimal is missing null check in setValue() (Jason Dere, reviewed by Jitendra Pandey)


git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1611235 13f79535-47bb-0310-9956-ffa450edef68