[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 RJVB):

 OK, I'll see how easy it is to build just the QGpgME component; hopefully
 it's just a matter of setting `languages=qt`. I didn't want to say it, but
 yeah, it'll allow us to avoid multiple-captains-on-a-ship disagreements ;)
 Either way, having a gpgme-qt5 port will allow dependents to use a regular
 depspec and not the active_variants hack.

 If others have tested the easy solution of setting _DARWIN_C_SOURCE to a
 suitable value that that will indeed be the more elegant approach. Check
 the patchfile though, there are 1 or 2 locations where I had to include a
 headerfile (strings.h) for `strcasecmp`, without having to provide an
 explicit prototype. Maybe that header will be included automagically when
 _DARWIN_C_SOURCE is set, but I don't think that that would be a proper
 fix.

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Ticket URL: <https://trac.macports.org/ticket/53122#comment:7>
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