[MacPorts] #55163: supertux: Update to version 0.5.1

[MacPorts]

#55163: supertux: Update to version 0.5.1
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 Reporter:  mf2k    |      Owner:
     Type:  update  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  supertux
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 I am attempting to update supertux to the latest version, but I am running
 into a configure problem. I am attaching my portfile diff which uses the
 GitHub and cmake portgroups. Apparently it is having issues with physfs.
 Maybe that port needs to be updated to the latest version 3.0.0?

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Ticket URL: <https://trac.macports.org/ticket/55163>
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