Major breakthrough: Polyphony with 256 voices!

[NightFright2k19]

I may have really done it: All Yamaha plugins with max polyphony of 256!

I basically took the experiences from my Nuked-SC55-P256 and applied it here as well. Open a second instance with another 128 voices which are only utilized on demand, with wakeup/sleep function to preserve CPU.

Changelog

• Second synth engine inside the DLL (new section .sxp in front of .rsrc), made at plugin start, gets every event so it always has the song's state; tables and wave data are shared
• Note On goes to engine 1 while it has two voices free, then to engine 2, else engine 1 steals; everything else goes to both, outputs are added
• Engine 2 renders only with notes (+4 s tail, +250 ms after SysEx), sleeps otherwise; takes engine 1's control-rate clock on waking (its notes are bit-identical to engine 1's)
• Effect switches and Output Level follow engine 1; GUI resets and preset steps go to both; effClose closes engine 2
• Setup page: Polyphony slider 8-256, saved in the plugin state ('RP' appendix; older 'RS' chunks load with up to 128)
• Default polyphony: 256 (no saved state, Set Defaults, older 'RS' chunks); songs up to 128 voices stay bit-identical
• Panel POLYPHONY readout counts the voices of both engines (up to 256)
• MU50/80/90 Setup page: "Utility" box renamed "Reset Mode", label above the radio buttons removed, buttons moved up and flush with the box title, box and page 10 units shorter

Feel free to test it. Now there is the fancy patcher for this purpose, so it's as easy as it has never been before!