[MacPorts] #54163: google-perftools: replaced by gperftools

[MacPorts]

#54163: google-perftools: replaced by gperftools
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 Reporter:  l2dy    |      Owner:
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  google-perftools nginx
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 Should we rename the variant `google_perftools` in nginx?

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Ticket URL: <https://trac.macports.org/ticket/54163>
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