renaming Xen kernel configs

[Hubert Feyrer <hubert%feyrer.de@localhost>]

Looking at our netbsd snapshots e.g. at 
ftp://ftp.de.netbsd.org/pub/NetBSD-daily/HEAD/200605040000Z/i386/binary/kernel, 
I find the naming could be improved, how about renaming existing -> new:

        netbsd-INSTALL_XEN3_U.gz        -> netbsd-INSTALL_XEN3_DOMU
        netbsd-INSTALL_XENU.gz          -> netbsd-INSTALL_XEN2_DOMU
        netbsd-XEN0.gz                  -> netbsd-XEN2_DOM0
        netbsd-XEN3_U.gz                -> netbsd-XEN3_DOMU
        netbsd-XENU.gz                  -> netbsd-XEN2_DOMU
        eventually:                     -> netbsd-XEN3_DOM0

If you want I can take a stab at the legwork for this.
(Is there anything else to do than to rename the kernel config files, 
maybe adjust the Xen Howto and pull the changes up to the netbsd-3 
branch?)


 - Hubert