Hmm... I do not think the GPS device is sending GSV sentences. I forgot, you must put that configuration command in this test sketch, too:
void setup()
{
//Serial.begin( 9600 );
// Serial.println( F("status,date/time,speed") );
// gpsPort.begin( 9600 );
gpsSerial.begin(9600); //Starting GPS at a 9600 baud rate
--> gps.send_P( &gpsSerial, F("PMTK314,0,1,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0") ); // RMC+GGA+GSV
lcd.begin(16,2);
pinMode(11, OUTPUT);// PWM out per contrasto automatico
if(EEPROM.read(0)==255) contr=70; else contr=EEPROM.read(13); // Carica il valore del contrasto
analogWrite(11,contr); // Applica il contrasto memorizzato
}