[rfc] [patch] trivial patch to speed up bzr log

[Denys Duchier]

Martin Pool <mbp at sourcefrog.net> writes:

> log could possibly be improved a bit more by caching the parsed revision
> and inventory objects.

yes, I am able to shave off an additional 13.5s by caching the last inventory in
the branch object.

patch available as revno=1505 in my bzr.cleanup branch

Cheers,

--Denys