Fix documentation to avoid error when read doc...

assert self.manifestURL is not None
exceptions.AssertionError:

<class 'buildbot.steps.source.repo.Repo'>.__init__ got unexpected keyword argument(s) ['manifestUrl']
Fix perforce workdir path when master and slaves are in different os
Merge alagoutte/buildbot:master (PR #1112)
relnote
Merge branch 'master' into nine