- Add patch 1017-enforce-sufficient-shutdown-warnings.patch
Warn once per hour in the last 3 hours, then all 30 minutes in last
hour, all 15 minutes in the last 45 minutes, all 10 minutes in the
last 15 minutes, and then all minute in the last 10 minutes (bnc#750845)

- Add patch support-powerfail-with-powerstatus.patch and source
file systemd-powerfail to implement SIGPWR support with evaluation
of the file /var/run/powerstatus (bnc#737690)