[MacPorts] #53006: buildbot @0.8.12_7: update to 0.9.1

[MacPorts]

#53006: buildbot @0.8.12_7: update to 0.9.1
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  Reporter:  l2dy      |      Owner:
      Type:  update    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  buildbot  |
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Comment (by ctreleaven):

 Note that buildbot 0.9 is very different from 0.8.  Probably want to
 retain a buildbot8 port.

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Ticket URL: <https://trac.macports.org/ticket/53006#comment:1>
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