This is a copy of patch version 3 for issue #278 on the issue-tracker:

 - Allow multiple bind-mounts (--bdir) and multiple cow-mounts (--cdir).

 - Further fixes to permissions throughout lxc-start-ephemeral (annotated
   in the code).

Signed-off by: Oleg Freedholm <overlayfs@gmail.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>