[webkit-gtk] gobject-introspection fix for OSX

[Jeremy Huddleston Sequoia]

I'd like to discuss nominating the fix for bug #152650 for inclusion in the 2.11/2.12 branch to re-enable gobject-introspection on OSX.

Note that the newest release of gobject-introspection doesn't work on OSX due to https://bugzilla.gnome.org/show_bug.cgi?id=625195, but a patch is available (and included if you install gobject-introspection on MacPorts).

Thanks,
Jeremy

cf https://bugs.webkit.org/show_bug.cgi?id=152650