cu2d process requires updated bzr

[Francis Ginther]

The cupstream2distro tools use:

bzr lp-propose-merge --approve

to create and approve the MP for the changelog merge backs. Unfortunately bzr 2.5.1 does not set the revision ID. As a result we need the following fix:
http://bazaar.launchpad.net/~bzr-pqm/bzr/bzr.dev/revision/6571

[Francis Ginther (fginther)]

Workaround is in place:
jenkins@jatayu:/usr/share/pyshared/bzrlib/plugins/launchpad$ diff lp_propose.py lp_propose.py.orig
205,206c205
< # hot patch carried over from magners to allow cu2d to approve merge back MRs -- vila 2013-11-19
< self.call_webservice(mp.setStatus, status='Approved', revid=self.source_branch.bzr.last_revision())
---
> self.call_webservice(mp.setStatus, status='Approved')