remote-bzr: make bzr branches configurable per-repo

Different repositories have different branches, some are are even
branches themselves.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
remote-hg: allow all remotes to be upgraded

In order for the old organization to be upgraded, we need to remove the
old repos, so they use the shared one in the next fetch.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
remote-helpers: fix test checks

We need to check for $PYTHON_PATH, not 'python'.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
t: fix remote helpers format error

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
remote-bzr: trivial sync fix

We probably don't want those updating and cloning messages.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
remote-helpers: remove previous org cruft

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>