Make sure FX are scheduled with highest priority (i.e. ensure effects are sent out before note on), plus clean up the scheduler priority system

Conflicts:
	common/PEQpitches.c
Pd: Finishing the new API. Various fixes, improvements, documentations

Conflicts:
	common/PEQfxs.c
Pd: Upgraded to latest libpds. It contains a bunch of new radium entries in the Put menu