This supercedes my previous switch_root patches, and applies on top of davej's
repo at git.kernel.org.
Nash is gone. In its place we have a reasonable switch_root implementation.
Of course, this switch_root is written in some rather hideous shell script,
and relies on some rather dodgy hacks. Rewriting in C would help things out.
However, it should be distro-independent, and it gets the job done.
Harald Hoyer