[MacPorts] #38817: gcc48: update to stable version

[MacPorts]

#38817: gcc48: update to stable version
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  Reporter:  ryandesign@…  |      Owner:  mww@…
      Type:  update        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  gcc48         |
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Comment (by jeremyhu@…):

 The version of gcc48 shipped is newer than gcc-4.8.0.  It contains 4.8.0
 plus stable patches from upstream.  If you want to switch to versioned
 releases, we should do that with 4.8.1

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Ticket URL: <https://trac.macports.org/ticket/38817#comment:1>
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