Pierre-Yves David <pierre-yves.david@octobus.net> [Tue, 10 Oct 2017 15:47:11 +0200] rev 3044
topic: reorder revset for faster evaluation
When running the revset on unfiltered repository, the mutable set can get huge.
So removing the obsolete changeset first provide a large speedup. This resolve
the performance regression we were seeing since the 6.7.0 release.