Fix rcsid comment.
Fix some tags on set lists related to zfs, solaris, lvm, mdns, xen.
Fix MKNLS=no build by untagging unconditional empty directories.

XXX May merit investigating why these are made when MKNLS=no, but
they don't seem to hurt.
A80: Startup 3 additional Cortex-A7 cores in cluster 0.
enable MULTIPROCESSOR