[MacPorts] #46570: git, openbrowser, ossp-uuid, xraylib: remove variants perl5_12, perl5_14, introduce support for 5.18 and 5.20

[MacPorts]

#46570: git, openbrowser, ossp-uuid, xraylib: remove variants perl5_12, perl5_14,
introduce support for 5.18 and 5.20
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  Reporter:  mojca@…                             |      Owner:  macports-
      Type:  enhancement                         |  tickets@…
  Priority:  Normal                              |     Status:  new
 Component:  ports                               |  Milestone:
Resolution:                                      |    Version:
      Port:  git, openbrowser, ossp-uuid,        |   Keywords:
  xraylib, biblatex-biber, intltool              |
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Comment (by mojca@…):

 It's not clear to me whether Perl in `ossp-uuid` is "required" or not. The
 `Portfile` is written as if it was optional, but then it picks
 `+perl5_16`.

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Ticket URL: <https://trac.macports.org/ticket/46570#comment:16>
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