udd-ifying bzr ppas

[Martin Pool]

At the moment bzr packaging is in branches like
lp:~bzr/bzr/packaging-karmic, which contain a copy of the Debian
directory only, to be used in bzr builddeb 'split' mode.  During the
UDD process it's been decided that the standard mode of operation will
be to have package branches that are branches of full copies of the
tree.

So it seems to me that it would be good to switch the Bazaar packaging
branches over to this mode of operation, by

1- starting new branches off lp:ubuntu/bzr for our packaging
2- updating the scripts and documentation to work in this mode

I think there is not very interesting history in the packaging
branches that hasn't already gone into Debian and Ubuntu, so while
it's worth keeping them for reference it's not worth doing anything
special to merge them.

Any corrections/objections to the above?

I'm going to start an SRU proposal attached to
https://bugs.edge.launchpad.net/ubuntu/+source/bzr/+bug/437626 based
off this branch.

-- 
Martin <http://launchpad.net/~mbp/>