Features:
-* replace sysvpath by a new more generic property
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* make sure show-logs checks for utf8 validity, not ascii validity
* add CapbilityBoundingSet to system.conf to set system-wide caps bounds, and same for TimerSlackNS
* properly detect mimo devices, the current VID/PID check is too broad
-* introduce upgrade.target for offline upgrades
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* manipulate CPU governor during boot, set it to performance
* steal SBF management from the kernel