Cocoa has been the default toolkit in wxWidgets for a long time. There is really no good reason to use Carbon in 2016 and this removes a lot of unused and unmaintained code.
A newer version of XML Tools has been released (2.9.4) which supports OS X 10.6 and later. As such a link to the beta version of 2.9.4 is not needed anymore.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72428 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775