Now with squashfs mounting!

Will not fetch if the tcz is already there. To force the issue,
just remove it.

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Ignore dev.

It's required for chroots for loopback mounts.

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
add LD_LIBRARY_PATH to sh; have tcz make the trees and such

Still doesn't work but it's getting closer.

We're going to need an init process to do cleanup and so forth.

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>