Use __APPLE__ token to control OSX-specific tests
Use __APPLE__ token to control OSX-specific tests

The carbon framework is deprecated and not really related to OSX's
printf features. Directly test compiler-defined token for the platform
itself rather than that autodetected framework as a proxy.

https://bugzilla.gnome.org/show_bug.cgi?id=731625

johne53/MB3Glib,johne53/MB3Glib,johne53/MB3Glib,endlessm/glib,johne53/MB3Glib,endlessm/glib,johne53/MB3Glib,endlessm/glib,endlessm/glib,johne53/MB3Glib,endlessm/glib