RFR: 422: Add CLI tool expand issues in commit message

[Robin Westberg]

On Tue, 16 Jun 2020 13:48:54 GMT, Erik Helin <ehelin at openjdk.org> wrote:

> Hi all,
> 
> please review this patch that adds a tiny new CLI tool called `git expand`. The tool currently only supports one flag,
> `--issues`, which can be used to expand JBS issue ids in commit message. For example if a commit `HEAD` has the message
> `skara-420` and a user runs  $ git expand --issues HEAD
> 
> then the commit message will be `420: Expand JBS issues in PR titles`. This is useful for contributors _not_ using `git
> pr create` (which already does this and more).
> Testing:
> - [x] Manual testing of `git expand` on Linux x64
> 
> Thanks,
> Erik

Looks good!

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Marked as reviewed by rwestberg (Reviewer).

PR: https://git.openjdk.java.net/skara/pull/666