[MacPorts] #39811: gromacs: create a subport for gromacs-double

[MacPorts]

#39811: gromacs: create a subport for gromacs-double
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  Reporter:  mojca@…      |      Owner:  ryandesign@…
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  gromacs      |
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Changes (by ryandesign@…):

 * owner:  macports-tickets@… => ryandesign@…
 * status:  new => assigned


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Ticket URL: <https://trac.macports.org/ticket/39811#comment:2>
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