[MacPorts] #68606: smlnj: update to the new version, retain current as smlnj-legacy (following upstream)

[MacPorts]

#68606: smlnj: update to the new version, retain current as smlnj-legacy (following
upstream)
----------------------------+--------------------------
  Reporter:  barracuda156   |      Owner:  tobypeterson
      Type:  defect         |     Status:  closed
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.8.1
Resolution:  wontfix        |   Keywords:  arm64
      Port:  hamlet, smlnj  |
----------------------------+--------------------------

Comment (by tobypeterson):

 Or we can just wait for upstream to figure everything out... arm64 support
 will arrive some day, one imagines...

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Ticket URL: <https://trac.macports.org/ticket/68606#comment:15>
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