Update region overrides and overclocking

- ines.c - misc cleanups
- Fix Dendy not restored when changing overrides back to auto mode
- directly apply new scanlines and additional scanlines when changing overclock settings
- (readability) change variable name overlock_state to overclock_enabled

src/fceu.c

@@ -477,7 +477,7 @@ void FCEU_ResetVidSys(void)
       dendy = 0;
 
    normal_scanlines = dendy ? 290 : 240;
-   totalscanlines = normal_scanlines + (overclock_state ? extrascanlines : 0);
+   totalscanlines = normal_scanlines + (overclock_enabled ? extrascanlines : 0);
 
 	FCEUPPU_SetVideoSystem(w || dendy);
 	SetSoundVariables();