init: do not use 'set -e' in init.d script.

/lib/lsb/init-functions, which assists in writing LSB-compliant init
scripts, may fail if set -e is in effect and echoing status messages to
the console fails, for example.

Signed-off-by: Emmanuel Roullit <emmanuel.roullit@gmail.com>
deb: register init.d script in conffiles.

Signed-off-by: Emmanuel Roullit <emmanuel.roullit@gmail.com>