[MacPorts] #47025: poppler: add Qt5 subport and optional test support.

[MacPorts]

#47025: poppler: add Qt5 subport and optional test support.
--------------------------+----------------------
  Reporter:  rjvbertin@…  |      Owner:  devans@…
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:  haspatch
      Port:  poppler      |
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Comment (by mk@…):

 Replying to [comment:18 devans@…]:
 > ./poppler-annotation.h:31:10: fatal error: 'QtCore/QDateTime' file not
 found
 > #include <QtCore/QDateTime>
 >          ^
 > 1 error generated.

 I've seen similar stuff on the [http://build.macports.org/builders
 /buildports-mtln-x86_64/builds/21890 Mountain Lion] and
 [http://build.macports.org/builders/buildports-snowleopard-
 x86_64/builds/34193 Snow Leopard] buildbots for my latest charm-qt5
 commit.

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Ticket URL: <https://trac.macports.org/ticket/47025#comment:23>
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