Both extensions have been dropped from the X-Server in 2008:
http://cgit.freedesktop.org/xorg/xserver/commit/?id=1c8bd31
http://cgit.freedesktop.org/xorg/xserver/commit/?id=f4036f6
Don't build them by default.
Reviewed-by: Julien Cristau <jcristau@debian.org> Signed-off-by: Daniel Martin <consume.noise@gmail.com> Signed-off-by: Uli Schlachter <psychon@znc.in>