start_udev on udev removal

[Elan Ruusamäe]

posting here, as maybe someday somebody wants to fix this.

seems start_udev trigger is invoked when *udev* package is removed, and 
that call seems even to succeed!

# rpm -q dev udev
dev-3.4-10.x86_64
udev-208-11.x86_64

# rpm -e udev
* Starting udev...................................................[ BUSY ]
mknod: ‘/dev/cpu/microcode’: File exists
mknod: ‘/dev/fuse’: File exists
mknod: ‘/dev/net/tun’: File exists
mknod: ‘/dev/ppp’: File exists
mknod: ‘/dev/mapper/control’: File exists
[ DONE ]
* Setup extra nodes...............................................[ DONE ]
* Retrigger subsystems events.....................................[ DONE ]
* Retrigger devices events........................................[ DONE ]
* udevadm settle..................................................[ DONE ]

# rpm -q udev dev
package udev is not installed
dev-3.4-10.x86_64

-- 
glen