RFR: git-jcheck: simplify options

[Jorn Vernee]

On Fri, 10 Jul 2020 10:50:28 GMT, Erik Helin <ehelin at openjdk.org> wrote:

> Hi all,
> 
> please review this patch that simplifies the options to `git jcheck` for setting up a pre-push hook. The old hook was a
> bit too cumbersome to use, the new one has a much simpler interface. The simplification of the jcheck options also
> allowed some code to be removed from `git-sync`.  Testing:
> - [x] Manual testing on Linux x64
> 
> Thanks,
> Erik

Marked as reviewed by jvernee (Reviewer).

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PR: https://git.openjdk.java.net/skara/pull/705