[MacPorts] #53122: gpgme : upgrade to 1.8.0 and +qt5 variant

[MacPorts]

#53122: gpgme : upgrade to 1.8.0 and +qt5 variant
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  Reporter:  RJVB    |      Owner:
      Type:  update  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:  haspatch upstream
      Port:  gpgme   |
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Comment (by dbevans):

 Apparently the macOS strdup issue has been discussed upstream and they
 recommend adding
 {{{
 -D_DARWIN_C_SOURCE=900000L
 }}}
 to the CFLAGS and CXXFLAGS.

 See https://www.mail-archive.com/gnupg-users@gnupg.org/msg31883.html

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Ticket URL: <https://trac.macports.org/ticket/53122#comment:6>
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