[MacPorts] #44671: Coin: Install framework by default and remove variants

[MacPorts]

#44671: Coin: Install framework by default and remove variants
----------------------------+--------------------------------
 Reporter:  mark.brethen@…  |      Owner:  macports-tickets@…
     Type:  enhancement     |     Status:  new
 Priority:  Normal          |  Milestone:
Component:  ports           |    Version:  2.3.1
 Keywords:                  |       Port:  Coin
----------------------------+--------------------------------
 By default Coin is set up as a Mac OS X framework. In addition:

 1) The '--enable-next-minor' configure option was removed by the
 developer; therefore I have removed the 'devel' variant.

 2) The '--enable-threadsafe' configure option was removed by the
 developer; I have removed this variant.

 3) Removed the manpages variant; this doesn't build with the framework.

 4) fontconfig, freetype, zlib and bzip2 dependencies added (they were
 always required).

 5) qt4-x11 is ancient and no longer builds; removed this option.

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Ticket URL: <https://trac.macports.org/ticket/44671>
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