[MacPorts] #14699: spread: Update to version 4

[MacPorts]

#14699: spread: Update to version 4
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  Reporter:  Lars.Rasmusson@…  |      Owner:  macports-tickets@…
      Type:  update            |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:  1.6.0
Resolution:                    |   Keywords:
      Port:  spread            |
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Comment (by pixilla@…):

 It is preferred to use "system -W" rather than "cd &&":
 {{{
 system -W ${distpath} "curl ..."
 }}}

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Ticket URL: <https://trac.macports.org/ticket/14699#comment:12>
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