- Check for __WXCOCOA__ as an acceptable definition for a GUI
- Where __WXMAC__ is used to mean "running on a mac" check for
one of __WXMAC__ or __WXCOCOA__
- Add the obligatory __WXCOCOA__ definitions section
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@19668 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775