buildbot,distbot,watchbot: Adapt to latest toolbox version
The latest toolbox implements the --verbose and --shush options inside
the opt module, so it's no longer necessary to implement them explicitly.
This commit removes the --verbose and --shush options from all bots.
buildbot: Pick up tasks from a queue and place built packages in another queue
This commit modifies buildbot to pick up tasks from a queue and place built debian
packages in another queue. This allows for very straightforward parallelization of
builds, once the start/stop mechanism has been changed.