[MacPorts] #55756: sixs 2.1: new port for 6SV2.1

[MacPorts]

#55756: sixs 2.1: new port for 6SV2.1
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 Reporter:  ForTozs     |      Owner:
     Type:  submission  |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.4.2
 Keywords:  maintainer  |       Port:  sixs
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 Here is a very rough Portfile that allows me install 6S on my machine. I
 welcome any feedback.

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Ticket URL: <https://trac.macports.org/ticket/55756>
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