[MacPorts] #58163: muniversal-1.0: symlinked worksrcpath break correct operation (only last arch built and installed)

[MacPorts]

#58163: muniversal-1.0: symlinked worksrcpath break correct operation (only last
arch built and installed)
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  Reporter:  Ionic   |      Owner:  Ionic
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:          |
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Changes (by Ionic):

 * Attachment "muniversal.patch" added.

 Suggested patch against the `muniversal-1.0` PG. Please review. Will
 commit myself, including a revbump to `boehmgc`.

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Ticket URL: <https://trac.macports.org/ticket/58163>
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