RFR: webrev: refactor webrev stats

[Robin Westberg]

On Fri, 14 Aug 2020 15:47:52 GMT, Erik Helin <ehelin at openjdk.org> wrote:

> Hi all,
> 
> please review this patch that renames some of the stats methods (`added`, `modified`, `removed`) in `Hunk`, `Patch` and
> `Diff`. I want to rename them to clarify that they are statistics tailored for webrev (which has a rather peculiar
> notion of what a modified line is).  Testing:
> - [x] `make test` passes 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/713