remove LXC_CLONE_COPYHOOKS and make lxcapi_clone to copy hooks unconditionally (v3)

changes since v1;
	incorporated Serge's changes
changes since v2;
	added missing Signed-off-by

Signed-off-by: S.Çağlar Onur <caglar@10ur.org>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Set default paths for unprivileged use (v2)

When running unprivileged (euid != 0), LXC will now use the following paths:
 - Default lxc path: ~/.local/share/lxc/
 - Default config path: ~/.config/lxc/lxc.conf

Those two paths are based on standard XDG paths (though ignoring all the
possible override paths for now at least) and so probably don't need to
be configurable at build time.

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