fix typo in __process

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
add new type: __update_alternatives

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
use quiet mode by default

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

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
more hints for __debconf_set_selections

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