[MacPorts] #48834: add variants openblas, superlu, and tbb to armadillo

[MacPorts]

#48834: add variants openblas, superlu, and tbb to armadillo
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  Reporter:  hugo-ribeiro  |      Owner:  Schamschula
      Type:  enhancement   |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  armadillo     |
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Comment (by tenomoto):

 Would be nice if superlu variant is added.

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Ticket URL: <https://trac.macports.org/ticket/48834#comment:3>
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