[MacPorts] #15514: reinplace should warn if nothing got replaced

[MacPorts]

#15514: reinplace should warn if nothing got replaced
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  Reporter:  ryandesign@…  |      Owner:  macports-tickets@…
      Type:  enhancement   |     Status:  new
  Priority:  Normal        |  Milestone:  MacPorts Future
 Component:  base          |    Version:  1.6.0
Resolution:                |   Keywords:
      Port:                |
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Comment (by khindenburg@…):

 2 releases are out since the previous patch - can I commit the rest of
 this patch?

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Ticket URL: <https://trac.macports.org/ticket/15514#comment:23>
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