[PATCH 1 of 9 V3] perf: introduce a perfrevlogwrite command

[Yuya Nishihara]

On Tue, 06 Nov 2018 12:27:29 +0100, Boris Feld wrote:
> # HG changeset patch
> # User Boris Feld <boris.feld at octobus.net>
> # Date 1538556809 -7200
> #      Wed Oct 03 10:53:29 2018 +0200
> # Node ID 1d1bc06187e9296430045aa39c3d3e2d12f61875
> # Parent  909c31805f54628ab5bf22cd92418c8ac9c09277
> # EXP-Topic revlog-perf
> # Available At https://bitbucket.org/octobus/mercurial-devel/
> #              hg pull https://bitbucket.org/octobus/mercurial-devel/ -r 1d1bc06187e9
> perf: introduce a perfrevlogwrite command

Queued, thanks.

Can you add some tests as a follow up? This hooks into various revlog
internals, which will be likely to break by API change. Also, the current
code wouldn't work on Python 3.