document CDIST_LOCAL_SHELL

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
document CDIST_REMOTE_SHELL

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
++changes

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
relese 3.1.2 = today

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>