Merge branch 't/audiod_cleanups'

Merge branch 't/audiod_cleanups'

Was cooking for ~2 weeks

	1ff4b2 audiod: Don't compute stat info unnecessarily.
	d80f5d audiod: Force status dump every 5 seconds.
	e34e5f audiod: Improve status timeout handling.
	fe7442 audiod: Reorder exit log messages a bit.
	32a078 audiod: Fix memory leak on exit: stat client.
	706778 audiod: Fix memory leak on exit: gengetopt.
	eec23a audiod: Fix memory leak on exit: close slots.
	cd5f0a audiod: Unify startup messages of receivers, filters and writers.
	597966 audiod: Print a warning if filters are ignored.
	a94e8e audiod: Remove pointless continue statement in com_stat().
	f45bc6 audiod: Make command array static.
	c96792 audiod: Fix error message on status errors.