[MacPorts] #50572: boost @1.59.0 Update to to 1.60.0

[MacPorts]

#50572: boost @1.59.0 Update to to 1.60.0
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  Reporter:  crmoore@…  |      Owner:  ryandesign@…
      Type:  update     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  boost      |
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Comment (by michaelld@…):

 uri at mit.edu: Do you have a patch for this upgrade? I'd be happy to test
 local to my system before committing; many of my projects (in MP and not)
 use numerous Boost modules.

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Ticket URL: <https://trac.macports.org/ticket/50572#comment:6>
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