See summary. The changelog makes reference to a change in sys-fs/udev, but nothing in sys-apps/systemd changed. We have installed it as /usr/lib/systemd/systemd-udevd for several releases.
*** This bug has been marked as a duplicate of bug 503060 ***
Sorry Mike, I didn't see you had also put the duplicate bug to 'See also: ' field but only after the fact. So I wasn't aware you specifically meant the ChangeLog was a bit unreadable. I tried to rectify that now: http://sources.gentoo.org/viewvc.cgi/gentoo-x86/sys-kernel/dracut/ChangeLog?r1=1.160&r2=1.161 And sorry again for misunderstanding the point of your bug.