[MacPorts] #60819: sfml fails to build on 10.6.8 due to missing method backingScaleFactor

[MacPorts]

#60819: sfml fails to build on 10.6.8 due to missing method backingScaleFactor
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  Reporter:  programmingkidx  |      Owner:  (none)
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:  snowleopard leopard tiger
      Port:  sfml             |
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Comment (by rkitover):

 Hi guys, I'm the original port submitter.

 If you are going to update the port, could you please bump up the version
 too, the current release is 2.5.1.

 I could do this myself if you prefer.

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Ticket URL: <https://trac.macports.org/ticket/60819#comment:7>
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