Re-export cairo-sys as ffi.

[richard-uk1]

Closes #342

2 questions:

• Do you prefer with doc(inline) or without? Run cargo doc with and without to see the difference.
• What other crates should I do this for?

[sdroege]

Do you prefer with doc(inline) or without? Run cargo doc with and without to see the difference.

@GuillaumeGomez ?

What other crates should I do this for?

I guess this should be done for glib, gio, pango, pangocairo, atk, gdk-pixbuf, gdk, gtk, graphene, gsk4, gdk4, gtk4. If you don't want to do it for all of them that's ok, we can do the others.

[sdroege]

I guess this should be done for glib, gio, pango, pangocairo, atk, gdk-pixbuf, gdk, gtk, graphene, gsk4, gdk4, gtk4. If you don't want to do it for all of them that's ok, we can do the others.

In case of glib there's glib_sys and gobject_sys. Which should probably become glib::ffi and glib::gobject_ffi I guess?

[GuillaumeGomez]

Without doc(inline) preferably.

[richard-uk1]

I've removed doc(inline). As a bonus, it makes the diff very small :D.

As for the other crates, I would maybe prefer if you made the changes, because you will be more aware of things like the gobject_ffi naming issue. But if you want you can ask me to change some or all of them and I will do the corresponding PRs. Let me know on this issue which ones you would like me to change, if any.

[GuillaumeGomez]

Hey @derekdreery ! We migrated the cairo crate into the gtk-rs/gtk-rs repository. Could you please reopen your PR there? :)