[MacPorts] #43428: TeXmacs: update to 1.0.7.21

[MacPorts]

#43428: TeXmacs: update to 1.0.7.21
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 Reporter:  ryandesign@…  |      Owner:  gwright@…
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.2.1
 Keywords:                |       Port:  TeXmacs
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 TeXmacs is outdated and should be updated to the latest stable version,
 currently 1.0.7.21. Unfortunately it does not build. I've filed a bug
 report with the developers: https://savannah.gnu.org/bugs/?42146 I'm
 attaching my patches so far.

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Ticket URL: <https://trac.macports.org/ticket/43428>
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