[MacPorts] #50671: boost: Update to 1.62.0

[MacPorts]

#50671: boost: Update to 1.62.0
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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):

 I just pushed the branch https://github.com/macports/macports-
 ports/tree/boost_update where work on this ticket can happen. I've updated
 both boost and the ports that I have installed that depend on boost ("port
 dependents boost"). I'm quite sure there are more ports that depend on
 boost than those I updated. I have had no issues thus far with the update;
 everything including boost build cleanly (or, at least as cleanly as the
 prior boost provided). Let's get updates to this branch in place, verified
 and tested, then we can merge the whole shebang at once into the master --
 and, keep this branch around for future boost updates, since knowing which
 ports to rev-bump is part of the issue.

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Ticket URL: <https://trac.macports.org/ticket/50671#comment:19>
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