[MacPorts] #57051: bzip2: fix livecheck

[MacPorts]

#57051: bzip2: fix livecheck
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  Reporter:  pmetzger  |      Owner:  ryandesign
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  bzip2     |
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Comment (by jmroot):

 The real homepage's domain expired. It's not clear when the alternative
 one will be updated with the current content.

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Ticket URL: <https://trac.macports.org/ticket/57051#comment:1>
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