RFR: cli: better hg support in git-jcheck

[Robin Westberg]

On Mon, 23 Mar 2020 06:30:14 GMT, Erik Helin <ehelin at openjdk.org> wrote:

> Hi all,
> 
> please review this patch that adds better support for the `--mercurial` flag to
> `git-jcheck`. Some newer (git specific) features will be disabled when
> `--mercurial` is passed and errors will not be shown for missing email
> addresses.
> 
> Testing:
> - Manual testing of `git jcheck --mercurial` 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/528