[MacPorts] #54975: Newer version not being detected by base

[MacPorts]

#54975: Newer version not being detected by base
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  Reporter:  mf2k    |      Owner:
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  base    |    Version:  2.4.99
Resolution:          |   Keywords:
      Port:          |
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Comment (by kencu):

 perhaps `20170727` should be `2017072701` ?

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Ticket URL: <https://trac.macports.org/ticket/54975#comment:2>
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