[MacPorts] #43183: glib2: update to 2.40.0

[MacPorts]

#43183: glib2: update to 2.40.0
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  Reporter:  cal@…   |      Owner:  ryandesign@…
      Type:  update  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.2.1
Resolution:          |   Keywords:
      Port:  glib2   |
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Comment (by ryandesign@…):

 I updated glib2-devel to 2.40.0 in r118532, so you can test with that
 already. I want to make sure it builds on all OS X versions before
 updating glib2 itself.

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Ticket URL: <https://trac.macports.org/ticket/43183#comment:1>
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