using branch7.revision_id_to_revno to get dotted revnos

[Martin Albisetti]

Hello from lovely Mountain View, California.

I've been managing to get some Loggerhead hacking done in the past few
days, and we've been looking into some optimizations with lifeless and
poolie, and one of them is to try and avoid generating the whole
revision graph every time. A first step was to get revnos lazily, so I
started playing with branch.branch7.revision_id_to_revno, but it seems
to blow up on dotted revnos.

Is there something else I should be using?


-- 
Martin