Dependency advice for /sbin/extlinux ?

[Bruno Wolff III]

syslinux recently split out a a subpackage syslinux-extlinux.
livecd-tools uses /sbin/extlinux in livecd-iso-to-disk.

My questiomn is it better to use requires on syslinux for F13 (and maybe
F12) and syslinux-extlinux going forward or should I require /sbin/extlinux
allowing the same spec file to be used on F13 as on F14+ and take the hit
of having to do a file check whenever livecd-tools is installed by yum?