[MacPorts] #64428: boost178: create new port for latest upstream version

[MacPorts]

#64428: boost178: create new port for latest upstream version
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  Reporter:  reneeotten  |      Owner:  michaelld
      Type:  request     |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.7.1
Resolution:              |   Keywords:
      Port:  boost       |
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Comment (by michaelld):

 Here's the PR for the port: https://github.com/macports/macports-
 ports/pull/13649

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Ticket URL: <https://trac.macports.org/ticket/64428#comment:1>
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