HIVE-6641 : optimized HashMap keys won't work correctly with decimals (Sergey Shelukhin, reviewed by Gunther Hagleitner)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1578997 13f79535-47bb-0310-9956-ffa450edef68
HIVE-6639. Vectorization: Partition column names are not picked up. (reviewed by Vikram)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1579001 13f79535-47bb-0310-9956-ffa450edef68