[MacPorts] #18426: Add apple-gcc-4.2 option for configure.compiler

[MacPorts]

#18426: Add apple-gcc-4.2 option for configure.compiler
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 Reporter:  ryandesign@…             |       Owner:  ryandesign@…           
     Type:  enhancement              |      Status:  new                    
 Priority:  Normal                   |   Milestone:  MacPorts 1.7.1         
Component:  base                     |     Version:  1.7.0                  
 Keywords:                           |        Port:                         
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 In #16666 it was requested to add apple-gcc-4.2 as a possible value for
 configure.compiler.

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Ticket URL: <http://trac.macports.org/ticket/18426>
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