This is a patch by Tobbi from supertux that fixes some identified issues with the OSX bundle.
See
http://irclogs.wildfiregames.com/2018-05/2018-05-11-QuakeNet-%230ad.log
http://irclogs.wildfiregames.com/2018-05/2018-05-12-QuakeNet-%230ad.log
* Drop OSX Lion 10.7 to prevent warnings that are treated as errors. There was an alternative patch for a darwinssl file too.
* `--without-libidn` is present, but `--without-libidn2` must be added to.