start-stop-daemon: new package

We don't use the 1.17.x series because it has issues when
cross-compiling.

[Thomas:
  - change license to GPLv2+, and the license file to COPYING. While
    start-stop-daemon.c itself is under the Public Domain, the compat
    library against which it is linked is GPLv2+.]

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Tested-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Tested-by: Karoly Kasza <kaszak@gmail.com>
Reviewed-by: Karoly Kasza <kaszak@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>