[MacPorts] #53794: Update ncarg to 6.4.0

[MacPorts]

#53794: Update ncarg to 6.4.0
---------------------------+----------------------
  Reporter:  Dave-Allured  |      Owner:  tenomoto
      Type:  update        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  ncarg         |
---------------------------+----------------------
Changes (by mf2k):

 * cc: takeshi@… (removed)
 * status:  new => assigned
 * owner:   => tenomoto


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Ticket URL: <https://trac.macports.org/ticket/53794#comment:1>
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