[MacPorts] #47546: gcc5 @5-20150421_0: update to 5.1 (was: Create gcc51 for the released gcc 5.1)

[MacPorts]

#47546: gcc5 @5-20150421_0: update to 5.1
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  Reporter:  anders@…  |      Owner:  mww@…
      Type:  request   |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.3.3
Resolution:            |   Keywords:
      Port:  gcc5      |
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Changes (by larryv@…):

 * cc: ryandesign@… (added)


Comment:

 GCC is now [https://gcc.gnu.org/develop.html#num_scheme using the major
 number for releases] instead of the minor number, so we won’t be creating
 a `gcc51` port. We should bump `gcc5` to @5.1, though.

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Ticket URL: <https://trac.macports.org/ticket/47546#comment:3>
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