[MacPorts] #65474: darktable: upstream build script: review for relevant port changes

[MacPorts]

#65474: darktable: upstream build script: review for relevant port changes
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  Reporter:  mascguy                             |      Owner:  mascguy
      Type:  enhancement                         |     Status:  assigned
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:  2.7.2
Resolution:                                      |   Keywords:
      Port:  darktable exiv2 gnutls gtk-mac-     |
  bundler gtk-osx-application                    |
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Comment (by mascguy):

 @ryandesign Relative to enabling BMFF support in `exiv2`, it looks like
 past patent concerns have been vetted. Enough so that upstream has enabled
 that support by default, on the main branch:

 * [https://github.com/Exiv2/exiv2/issues/1679 1679 - BMFF/JPEG-XL patent
 discussion]
 * https://github.com/Exiv2/exiv2/blob/main/CMakeLists.txt

 Given all that, would you feel comfortable enabling by default for our
 port?

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Ticket URL: <https://trac.macports.org/ticket/65474#comment:7>
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