Report version of HarbourBridge when run from command line

[agasheesh]

We have had few instances in the past where customer reported issues but it was suspected that they may have been using an older version of the tool. But since we don't report the version of HarbourBridge on the stdout, it becomes quite hard to reproduce a given issue or to be able to state whether upgrading to the latest version of the tool would have fixed the issue.

Until we get the full release versioning in place, suggest that we report the commit hash, and if possible date and time when that commit was check in to master.