make lxc.network.script.down consistent with lxc.network.script.up

- add missing print in lxc_list_nicconfigs() and in write_config() which
  fixes lxc-clone so it will propagate the script.down config value

- add missing "script.down" to lxc_get_item_nic(). change "upscript" to
  "script.up" to match actual key in config

- refactor to use config_string_item()

Signed-off-by: Dwight Engen <dwight.engen@oracle.com>
Acled-by: Stéphane Graber <stgraber@ubuntu.com>
change version to 1.0.0.beta1 in configure.ac

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
autostart: Define lxc.start.* and lxc.group

First patch in the set of changes required for container autostart.

This commit adds the new configuration keys and parsers that will then
be used by lxc-start and lxc-stop.

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
lxc-ls: Add lxc.start.auto and lxc.group support

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
lxc-ls: Add workaround for nested containers

When accessing nested containers, hardcode the path to their config.

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
Add lxc-autostart

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>