here's a script, mod_files.sh, in ext/session for creating directory
tree with depth X for sessions. As it stands, it's pretty poorly
documented and very basic. I * got exceptionally bored and rewrote most
of it, the patch is attached. It runs fine for me in linux (with sh
version 4.0). I don't have any other *NIX systems to test it out on,
so I can't verify that it works in anything but linux, sorry.

* Eddie Drapkin