make sure path names are quoted when passing to lsof
undo - make sure path names are quoted when passing to lsof
CC-4975: airtime-silan cmd error

-fixed
CC-4888: Add unofficial support for AAC plugin

-fixed
potential future optimization by using -b silan option

-in the future this -b should be quicker for silan
less verbose logging
CC-4974: Watchdog for ensuring Liquidsoap does not consume more than 1GB of memory

-changed to 600MB for now. May lower even more later
Merge branch '2.3.x' into cc-4979-add-fourth-switch