[MacPorts] #20659: automatically update config.guess/config.sub

[MacPorts]

#20659: automatically update config.guess/config.sub
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 Reporter:  toby@…             |       Owner:  macports-tickets@…                   
     Type:  enhancement        |      Status:  new                                  
 Priority:  Normal             |   Milestone:  MacPorts Future                      
Component:  base               |     Version:                                       
 Keywords:                     |        Port:                                       
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 Provide a way for a port to request automatic update of its
 config.guess/config.sub files. For an example of a port that would be
 simplified by such a feature:
 http://trac.macports.org/browser/trunk/dports/net/traceroute/Portfile

 We could just keep recent copies in ${prefix}/share/macports and update
 ports that set an option for it.

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Ticket URL: <http://trac.macports.org/ticket/20659>
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