[MacPorts] #71748: boost PG: update default version to 1.87

[MacPorts]

#71748: boost PG: update default version to 1.87
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  Reporter:  mohd-akram  |      Owner:  (none)
      Type:  update      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  boost       |
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Comment (by barracuda156):

 Replying to [comment:5 ryandesign]:
 > But each port needs to be tested with each new version of boost to
 verify that it still builds. That's much easier to do on a case by case
 basis with separate versioned boost ports. It was enough of a problem that
 the significant effort to create versioned boost ports and the boost
 portgroup was undertaken.

 Agree with Ryan here. Especially given that specifically Boost 1.87+ had
 breaking changes in APIs, and it is nowhere guaranteed it gonna work. I am
 pretty sure a lot of older ports gonna break down, unless set to 1.76
 explicitly.

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Ticket URL: <https://trac.macports.org/ticket/71748#comment:6>
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