systemd/fixme

- mounts might take time, need to be executed asynchronously in a forked process?

- need gc for active jobs that nothing cares for

- need gc for units that are not referenced anymore

- refreshing of units (i.e. reload config files)

- dbusification

- cgroupsification

- udev hookup

- snapshot system

- hookup with battery status, suspend/resume

- add a job mode which shuts everything down but what is requested

- write log subsystem/log output logic for daemons

- implement priv dropping

- allow to disable priv dropping for hook scripts from fragment

- implement timer

- implement mount/automount

- more process attributes: chroot, cpu affinity, scheduling

- create session/pgroup for child processes

- fs namespaces

- templating/instances

- verify fragment data after loading: refuse cycles on yourself, service units contradicting, more than one Start executable, ...

- rate limit startups

- automatically delete stale unix sockets