[MacPorts] #63962: asymptote @2.70_1 doesn't build on monterey

[MacPorts]

#63962: asymptote @2.70_1 doesn't build on monterey
------------------------+----------------------
  Reporter:  baikel     |      Owner:  mojca
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.7.1
Resolution:             |   Keywords:  monterey
      Port:  asymptote  |
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Changes (by ballapete):

 * Attachment "ifxetex.sty" added.

 The missing style file

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Ticket URL: <https://trac.macports.org/ticket/63962>
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