[MacPorts] #48180: x2goclient: update to 4.0.4.0

[MacPorts]

#48180: x2goclient: update to 4.0.4.0
-------------------------+----------------------
  Reporter:  jonesc@…    |      Owner:  ionic@…
      Type:  update      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:  haspatch
      Port:  x2goclient  |
-------------------------+----------------------

Comment (by ionic@…):

 Also, please don't forget the maintainer(s) next time (but pseudo-names
 like `openmaintainer` or `nomaintainer`.)

 I didn't even know there are macports-x2go users...

 Your patch was in good spirit, but I changed how X2Go Clients is supposed
 to be built lately, which means a revamp of the Portfile. (That's also the
 reason I haven't updated it yet.)

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Ticket URL: <https://trac.macports.org/ticket/48180#comment:3>
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