Fixed casting warning in sanguino

Marlin/Configuration.h

 
 // Actual temperature must be close to target for this long before M109 returns success
 #define TEMP_RESIDENCY_TIME 10	// 30  // (seconds) 30 seconds was too long
-#define TEMP_HYSTERESIS 3       // (C�) range of +/- temperatures considered "close" to the target one
+#define TEMP_HYSTERESIS 3       // (degC) range of +/- temperatures considered "close" to the target one
 
 // The minimal temperature defines the temperature below which the heater will not be enabled It is used
 // to check that the wiring to the thermistor is not broken. 

Marlin/Sanguino/cores/arduino/pins_arduino.c

 const uint8_t PROGMEM port_to_mode_PGM[] =
 {
 	NOT_A_PORT,
-    &DDRA,
+	(uint8_t) &DDRA,
-	&DDRB,
+	(uint8_t) &DDRB,
-	&DDRC,
+	(uint8_t) &DDRC,
-	&DDRD,
+	(uint8_t) &DDRD,
 };
 
 const uint8_t PROGMEM port_to_output_PGM[] =
 {
 	NOT_A_PORT,
-	&PORTA,
+	(uint8_t) &PORTA,
-	&PORTB,
+	(uint8_t) &PORTB,
-	&PORTC,
+	(uint8_t) &PORTC,
-	&PORTD,
+	(uint8_t) &PORTD,
 };
 
 const uint8_t PROGMEM port_to_input_PGM[] =
 {
 	NOT_A_PORT,
-	&PINA,
+	(uint8_t) &PINA,
-	&PINB,
+	(uint8_t) &PINB,
-	&PINC,
+	(uint8_t) &PINC,
-	&PIND,
+	(uint8_t) &PIND,
 };
 
 const uint8_t PROGMEM digital_pin_to_port_PGM[] =