[MacPorts] #31015: supertux: add app icon

[MacPorts]

#31015: supertux: add app icon
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 Reporter:  ryandesign@…             |       Owner:  adamw@…          
     Type:  enhancement              |      Status:  new              
 Priority:  Normal                   |   Milestone:                   
Component:  ports                    |     Version:  2.0.1            
 Keywords:  haspatch                 |        Port:  supertux         
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Comment(by adamw@…):

 Well, though I am not a fan of the perspective (I'd much rather have a
 "switch" that would let me use preexisting libraries [at my own peril]
 without having to gut every Portfile, and not install libraries unless
 they don't already exist), I am certainly not going to argue in a ticket.
 As committers you understand best the policies and perspectives of the MP
 project, so please DTRT with the SuperTux dependencies. I hope you don't
 see me dragging my feet as challenging your need to maintain consistency.

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Ticket URL: <https://trac.macports.org/ticket/31015#comment:4>
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