[MacPorts] #52731: gtk-extra: mark outdated gtk1-based widget library obsolete replaced by gtk2-extra

[MacPorts]

#52731: gtk-extra: mark outdated gtk1-based widget library obsolete replaced by
gtk2-extra
-------------------------+-------------------------
 Reporter:  dbevans      |      Owner:  matthew.c@…
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.3.4
 Keywords:  removal      |       Port:  gtk-extra
-------------------------+-------------------------
 gtk-extra is based on gtk1 and was superceded by gtk2-extra in the early
 2000's when gtk2 became available. With gtk4 beta now scheduled for March
 2017 it just doesn't make any sense to keep old unmaintained gnome1/gtk1
 ports around.

 This port has no remaining dependents.

 Please let me know that I have your authority as maintainer to remove this
 port.

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Ticket URL: <https://trac.macports.org/ticket/52731>
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