[MacPorts] #37285: Update py-mpi4py to 1.3 and add Python 3.x ports

[MacPorts]

#37285: Update py-mpi4py to 1.3 and add Python 3.x ports
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 Reporter:  mkr@…   |      Owner:  macports-tickets@…
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.1.2
 Keywords:          |       Port:  py-mpi4py
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Ticket URL: <https://trac.macports.org/ticket/37285>
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