[MacPorts] #40822: cairo-devel: use git snapshot in lieu of unstable tarball

[MacPorts]

#40822: cairo-devel: use git snapshot in lieu of unstable tarball
-------------------------+--------------------------
 Reporter:  devans@…     |      Owner:  ryandesign@…
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.2.0
 Keywords:  haspatch     |       Port:  cairo-devel
-------------------------+--------------------------
 Since the release of cairo-1.12 cairo developers have released no new
 unstable tarballs.  Attached is a patch to cairo-devel
 to use commit specific tarballs from the upstream git repository instead.
 This works around problems with the standard git fetch
 has been in use here for some time without problems.

 Currently cairo git master is at version 1.13.1 and contains functionality
 based on pixman 0.30 enhancements that addresses
 at least one important bug
 [https://bugs.launchpad.net/inkscape/+bug/804162 inkscape 804162: bitmap
 downscaling] and is not in any released version to date.

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Ticket URL: <https://trac.macports.org/ticket/40822>
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