[MacPorts] #48827: nodejs: update to 4.0.0

[MacPorts]

#48827: nodejs: update to 4.0.0
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  Reporter:  felipou@…  |      Owner:  ciserlohn@…
      Type:  update     |     Status:  closed
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:  fixed      |   Keywords:  haspatch
      Port:  nodejs     |
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Comment (by sean@…):

 By the way, I would suggest using the github port group because it would
 simplify some of the code. Also, I have a patch that makes nodejs-devel a
 subport since both files are basically the same, so we can cut down on
 code duplication. Having it use the github port group would help with
 making the devel version easy to roll out.

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Ticket URL: <https://trac.macports.org/ticket/48827#comment:15>
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