Pierre-Yves David <pierre-yves.david@octobus.net> [Tue, 18 May 2021 15:07:17 +0200] rev 47331
revlogv2: use a unique filename for index
Having a unique index will allow for ambiguity less rewriting of revlog content,
something useful to clarify handling of some operation like censoring or
stripping.
Differential Revision: https://phab.mercurial-scm.org/D10771