Don't complain about css-mode in latest Emacs HEAD
Prefer (setq-local ...) to (set (make-local-variable ...) ...)
Revert "Prefer (setq-local ...) to (set (make-local-variable ...) ...)"

This reverts commit d0af143131df5d55e083c6cdeca4c1e37f550d34.
Use smie indentation from css-mode in latest Emacs HEAD