[RFC][MERGE][BZRK][Still reading?] Shiny new revision-layout for bzrk

[Jamie Wilkinson]

This one time, at band camp, Robert Collins wrote:
>My new branch for bzrk at
>http://bazaar.launchpad.net/~lifeless/bzrk/trunk (pushed via sftp, will
>be available in 10 minutes) contains a new revision layout, discussed
>with David yesterday, and hacked up today. From the log:
>Make revision sorting and linking use merge_sorted from latest bzr.dev.
>This  gives a much nicer layout with features such as 'fully merged
>branches' not being inappropriately shown as active - rather then point
>the branch is resurrected has its merge from mainline linked. This leads
>to a narrow, more understandable view, and much less cross-hatch cases -
>perhaps none in fact.
>
>this looks -really- nice IMNSHO. Please have a look and a play.

Also fixes an annoyance I've had for a while, correct chronological ordering
of revisions.

Thanks, I've merged into my branch.