http://lists.freedesktop.org/archives/systemd-devel/2013-February/009021.html
Features:
+* move /usr/lib/modules/$(uname -r)/modules.devname parsing from udevd to
+ kmod static-nodes
+ call kmod as an early service, and drop CAP_MKNOD from udevd.service
* systemd-delta needs to be made aware of *.d/*.conf drop-in files for
units.