[PATCH STABLE] hghave: deal with "rc" release

[Yuya Nishihara]

On Thu, 25 Apr 2019 21:19:51 +0200, Pierre-Yves David wrote:
> # HG changeset patch
> # User Pierre-Yves David <pierre-yves.david at octobus.net>
> # Date 1556212622 -7200
> #      Thu Apr 25 19:17:02 2019 +0200
> # Branch stable
> # Node ID fcaf2e87d89a2f4b12dfde47c29183a04436c442
> # Parent  ae68418cc3a1a01f7d33f9bad6a3f016d31c544c
> # EXP-Topic hghave
> # Available At https://bitbucket.org/octobus/mercurial-devel/
> #              hg pull https://bitbucket.org/octobus/mercurial-devel/ -r fcaf2e87d89a
> hghave: deal with "rc" release

Queued for stable, thanks.