[MacPorts] #55446: gnucash-devel: update to version 2.7.2, modernize dependencies

[MacPorts]

#55446: gnucash-devel: update to version 2.7.2, modernize dependencies
----------------------------+----------------------
  Reporter:  dbevans        |      Owner:  drkp
      Type:  update         |     Status:  accepted
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:
      Port:  gnucash-devel  |
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Comment (by drkp):

 Replying to [comment:2 drkp]:
 > Their official gnucash builds for MacOS are done by patching glib to
 make gint64 a long long instead, which seems pretty awful.

 Well, it looks like one answer is to use their patched glibconfig.h for
 the build (by putting it in the source tree, overriding the real one from
 glib2), since the sizes are in fact the same in the end. This is really
 awful, but it seems to work...

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Ticket URL: <https://trac.macports.org/ticket/55446#comment:4>
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