[MacPorts] #39146: svndumptool: use python2.7 instead of python2.6

[MacPorts]

#39146: svndumptool: use python2.7 instead of python2.6
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  Reporter:  blair@…      |      Owner:  ryandesign@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.1.3
Resolution:               |   Keywords:
      Port:  svndumptool  |
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Comment (by ryandesign@…):

 Thanks, feel free to commit and add openmaintainer.

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Ticket URL: <https://trac.macports.org/ticket/39146#comment:2>
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