HBASE-19152 Update refguide 'how to build an RC' and the make_rc.sh script; AMENDMENT adding generation of hashes
HBASE-19152 Update refguide 'how to build an RC' and the make_rc.sh script; AMENDMENT adding generation of hashes

HubSpot/hbase,HubSpot/hbase,HubSpot/hbase,HubSpot/hbase,HubSpot/hbase,HubSpot/hbase,HubSpot/hbase,HubSpot/hbase,HubSpot/hbase,HubSpot/hbase