farsight2-0.0.20 Enable python bindings and misc fixes

[louis-francis.ratte-boulianne@…]

Some fixes for the farsight2 port:

• Update to version 0.0.20
• Fix the pkg config path so configure can find python packages
• Fix the python exec dir path so the python bindings are installed at the right location
• Fix codegen utility path to generate python bindings
• Patch from upstream fixing discovering of codecs

[louis-francis.ratte-boulianne@…]

Portfile patch

[louis-francis.ratte-boulianne@…]

Patch to correctly discover codecs

[louis-francis.ratte-boulianne@…]

Patch to export right locations

[louis-francis.ratte-boulianne@…]

Patch to fix codegen path and install dir

[jmr@…]

Is it really correct to exclude the default pkgconfig dirs ${prefix}/lib/pkgconfig and ${prefix}/share/pkgconfig?

[louis-francis.ratte-boulianne@…]

According to ​https://trac.macports.org/ticket/19511 and ​https://trac.macports.org/wiki/Python, the default path should be searched as well.

And another argument is that it actually works ;)

[devans@…]

Yes, the default path is always searched last.

Upgraded to version 0.21 in r70736, all python issues addressed and patch from upstream now incorporated.

Sorry for not seeing this sooner.