[MacPorts] #13623: buildbot-0.7.6: update buildbot Portfile to 0.7.6

[MacPorts]

#13623: buildbot-0.7.6: update buildbot Portfile to 0.7.6
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  Reporter:  olv.bonnet at free.fr  |       Owner:  ryandesign at macports.org
      Type:  enhancement         |      Status:  new                    
  Priority:  Normal              |   Milestone:  Port Enhancements      
 Component:  ports               |     Version:  1.5.2                  
Resolution:                      |    Keywords:                         
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Changes (by ryandesign at macports.org):

  * owner:  macports-tickets at lists.macosforge.org =>
            ryandesign at macports.org

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Ticket URL: <https://trac.macports.org/projects/macports/ticket/13623#comment:1>
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