Job queue priority

[MC-arjen]

Jobs are now handled by the fifo scheduling principle. All jobs (but especially the transcoding jobs) need the possibility to give a optional priority value, to give the job less priority. suggestion: nice parameter like in *nix.

[peter]

Didn't make it to definitive set of must have issues for MM 3.0.

[MC-arjen]

• proposed name: priority
• range: -20 to 19
• default: 0

all job start calls should implement this parameter. The job priority parameter must be used in de jobscheduler; lower (!) priority numbers have precedence. (rationale: similar to the unix nice and lp commands)

[forgacs]

I have implemented the priority parameter for transcode, retranscode, analyse, still.
Range: -100 to 100.
Please, review it.