HIVE-4992 : add ability to skip javadoc during build (Sergey Shelukhin via Ashutosh h Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1511374 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4987 : Javadoc can generate argument list too long error (Brock Noland via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1511375 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4967 : Don't serialize unnecessary fields in query plan (Ashutosh Chauhan. Reviewed by Brock Noland)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1511377 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd