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/rtc.c

@@ -164,8 +164,6 @@ static void time_internal_set(struct tm *time_var)
 
 static void time_set_nvrram(char *nvrram, struct tm *cur_time_tm)
 {
-        int dow, mon, year;
-
         if (nvrram[RTC_REGB] & RTC_DM)
         {
                 nvrram[RTC_SECONDS] = cur_time_tm->tm_sec;