Not a big deal, just the OCD part of me want to bring this up. According to https://cwiki.apache.org/confluence/display/HAWQ/Contributing+to+HAWQ, our commit message should look like
HAWQ-###*.* Commit message blah blah blah We use period '.' to separate the JIRA number and the commit message. I don't quite feel good about the '.', so I looked up a bunch of other Apache projects and found their separators: hbase uses just a space storm, hive, samza uses ":" I really like the ":" separator as they convey the relationship between the JIRA number and the message explaining the JIRA number. Can we change the commit messages to HAWQ-###: Commit message blah blah blah
