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/fdc.h

@@ -52,3 +52,5 @@ void fdc_finishcompare(int satisfying);
 void fdc_finishread();
 void fdc_sector_finishcompare(int satisfying);
 void fdc_sector_finishread();
+void fdc_track_finishread(int condition);
+int fdc_is_verify();