split package running from the library

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
move test program to its own directory

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
implement (well, fix) 'ls'

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>