commit 6b5206e7cb8e5279816b48f014d47d3f03f16972
 Author: Daniel Stone <daniel@fooishbar.org>
 Date:   Fri Jul 18 15:38:10 2008 +0300

    dix: Remove insane BC hacks

    If your DDX needs a 1bpp mode and doesn't set it up, your DDX is
    incompetent.
Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>