Workaround for broken lxc-ls.

lxc-ls does not report properly list of running hosts - permission issue?
It was easier to workaround it with ps+regex hack.
libui-dialog-perl is missing under Etch.

No idea how did it even get on the list.
Random renames.
Moved configuration to a separate file.
Fix for newer debootstrap command line params.
DNSMasq leases file may contain interface name.
Get rid of init() and global vars.
Accept container name from cmd line.
Bind-mount user home directory for container.
Debootstrap tarballs must be unique.
Updated documentation.
Default configuration file.