86F format handler updated to 86F version 2.0 and bit by bit handling;

FDI stream images are now also handled by the 86F handler;
Both floppy drives' motors now spin separately;
Added Plantronics ColorPlus emulation per patch from PCem forum;
Applied all mainline PCem commits;
Fixed several bugs.

src/pc87306.c

@@ -251,7 +251,7 @@ process_value:
 			break;
 		case 9:
 			// pclog("Setting DENSEL polarity to: %i (before: %i)\n", (val & 0x40 ? 1 : 0), fdc_get_densel_polarity());
-			fdc_update_densel_polarity(val & 0x40 ? 1 : 0);
+			fdc_update_densel_polarity((val & 0x40) ? 1 : 0);
 			break;
 		case 0xF:
 			pc87306_gpio_init();