[MacPorts] #52476: libtorrent: Update to 0.13.6 w/ patches for macOS 10.12

[MacPorts]

#52476: libtorrent: Update to 0.13.6 w/ patches for macOS 10.12
-------------------------+-----------------------------
  Reporter:  torstenb@…  |      Owner:  stuartwesterman
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.4
Resolution:              |   Keywords:
      Port:  libtorrent  |
-------------------------+-----------------------------
Changes (by jmroot):

 * owner:  macports-tickets@… => stuartwesterman
 * status:  new => assigned


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Ticket URL: <https://trac.macports.org/ticket/52476#comment:5>
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