Fix segfault on lxc-create when no template specified

When no template file is specified on lxc-create, recieve segfault.
So change not to append header in config when no template is specified.

Signed-off-by: KATOH Yasufumi <karma@jazz.email.ne.jp>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>
template: Fix the container configuration issue in lxc-plamo

Signed-off-by: KATOH Yasufumi <karma@jazz.email.ne.jp>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>
doc: Update Japanese lxc-create(1) for default thin pool name

Update for commit 055af165efb08f4dd54608896893bb6928fd472f

Signed-off-by: KATOH Yasufumi <karma@jazz.email.ne.jp>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>
lxc-debian: Add hwaddr handling logic

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