[MacPorts] #37479: apple-gcc42: update to 4.2.4

[MacPorts]

#37479: apple-gcc42: update to 4.2.4
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  Reporter:  tobias.netzel@…  |      Owner:  jeremyhu@…
      Type:  update           |     Status:  reopened
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:
      Port:  apple-gcc42      |
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Comment (by jeremyhu@…):

 Ok, if they're going to be mutually exclusive, we might as well just make
 it a variant.  I've made such modifications and am giving the port a quick
 build test.  I'll also put you as maintainer.

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Ticket URL: <https://trac.macports.org/ticket/37479#comment:21>
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