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/codegen_ops_x86-64.h

@@ -3637,7 +3637,6 @@ static void FP_FXCH(int reg)
         addbyte(0x4c);
         addbyte(0xdd);
         addbyte(cpu_state_offset(MM));
-        reg = reg;
 }