[MacPorts] #50671: boost: Update to 1.65.0 (was: boost: Update to 1.64.0)

[MacPorts]

#50671: boost: Update to 1.65.0
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  Reporter:  eborisch  |      Owner:  ryandesign
      Type:  update    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.3.4
Resolution:            |   Keywords:  haspatch
      Port:  boost     |
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Comment (by michaelld):

 1.65.0 is out. should fix the major issues in 1.64.0. Hopefully doesn't
 introduce more.

 http://www.boost.org/users/history/version_1_65_0.html

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Ticket URL: <https://trac.macports.org/ticket/50671#comment:47>
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