[MacPorts] #25970: Variant names should be treated case-insensitively

[MacPorts]

#25970: Variant names should be treated case-insensitively
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  Reporter:  ryandesign   |      Owner:  macports-tickets@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  base         |    Version:  1.9.1
Resolution:               |   Keywords:
      Port:               |
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Comment (by neverpanic):

 Here's a patch. I have not verified that this covers all cases, so testing
 would be welcome.

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Ticket URL: <https://trac.macports.org/ticket/25970#comment:6>
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