Defines

A full 12 hours of solid programming, mostly tediously and mechanically updating each plugin with defines rather than ordinals, in an effort to save memory with separate 2-channel vs. 6-channel effects. Everything is now working apart from those optimisations being applied to reverbs, which are complex as these use multi-channel delays as well as filters. The reverbs (I used about 8) will probably take all day. That should be the last step on this Sisyphean program update.