The future of the native theming support

[Joel Holdsworth]

> I saw some screenshots by the Wine Staging team [7, 8] and it was
> terrible. By the way, someone asked me why does the existing
> implementation suck. Just look at the screenshots [7] and [8] again.
> This is the limit of what can be done by replacing the uxtheme.dll
> implementation. If you want more, comctl32 should be fixed.

This is my experience running Adwaita:
https://airwebreathe.org.uk/lib/exe/fetch.php?media=space:20160426-wine-gtk-adwaita.png 
.

- Clipped tab edges
- Clipped check boxes
- Clipped slider handle

It looks a bit better if I boost the DPI so that the font size matches 
the rest of the desktop. But the clipping issues don't go away.

Joel