[uml-devel] More checkins

[Jeff D. <jd...@ka...>]

This batch cleans out some recent entries to my patch backlog.

More of the ppc port is merged.
Most of Roman Zippel's cleanups are in.
Fixed the read hang and some other problems in the ethertap backend.  You'll 
need to update ethertap_helper, too.
Added the set_blocksize and SMP boot fixes.

				Jeff