[MacPorts] #57772: reduce @20180920_0+doc: version update

[MacPorts]

#57772: reduce @20180920_0+doc: version update
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  Reporter:  mbrethen  |      Owner:  mbrethen
      Type:  update    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.5.4
Resolution:            |   Keywords:
      Port:  reduce    |
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Comment (by mf2k):

 Thanks. [https://guide.macports.org/#development.patches Per the
 guidelines], please instead attach a unified diff of the Portfile so we
 can easily see what changes you are proposing.

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Ticket URL: <https://trac.macports.org/ticket/57772#comment:3>
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