[MacPorts] #41600: bison: update to 3.0.2

[MacPorts]

#41600: bison: update to 3.0.2
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  Reporter:  akim.demaille@…  |      Owner:  larryv@…
      Type:  update           |     Status:  assigned
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:  haspatch
      Port:  bison            |
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Comment (by akim.demaille@…):

 Hi Larry,

 Could you please also attach the complete Portfile (not just the diff, it
 does not apply cleanly on my machine) so that I may give a hand?

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Ticket URL: <https://trac.macports.org/ticket/41600#comment:52>
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