Change to LCD status indicators

The I2C LCD status indicators now indicate when the hotends or bed are
turned on at all (rather than just when they are in their heating phase)

Marlin/ultralcd_implementation_hitachi_HD44780.h

   #endif
   
 #elif defined(LCD_I2C_TYPE_MCP23017)
-  	lcd.setMCPType(LTI_TYPE_MCP23017);
+    lcd.setMCPType(LTI_TYPE_MCP23017);
     lcd.begin(LCD_WIDTH, LCD_HEIGHT);
     lcd.setBacklight(0); //set all the LEDs off to begin with
     
 #elif defined(LCD_I2C_TYPE_MCP23008)
-  	lcd.setMCPType(LTI_TYPE_MCP23008);
+    lcd.setMCPType(LTI_TYPE_MCP23008);
     lcd.begin(LCD_WIDTH, LCD_HEIGHT);
     
 #else
     char c;
     //Use all characters in narrow LCDs
   #if LCD_WIDTH < 20
-    	uint8_t n = LCD_WIDTH - 1 - 1;
+      uint8_t n = LCD_WIDTH - 1 - 1;
     #else
-    	uint8_t n = LCD_WIDTH - 1 - 2;
+      uint8_t n = LCD_WIDTH - 1 - 2;
   #endif
     lcd.setCursor(0, row);
     lcd.print(pre_char);
     char c;
     //Use all characters in narrow LCDs
   #if LCD_WIDTH < 20
-    	uint8_t n = LCD_WIDTH - 1 - 1 - strlen(data);
+      uint8_t n = LCD_WIDTH - 1 - 1 - strlen(data);
     #else
-    	uint8_t n = LCD_WIDTH - 1 - 2 - strlen(data);
+      uint8_t n = LCD_WIDTH - 1 - 2 - strlen(data);
   #endif
     lcd.setCursor(0, row);
     lcd.print(pre_char);
     char c;
     //Use all characters in narrow LCDs
   #if LCD_WIDTH < 20
-    	uint8_t n = LCD_WIDTH - 1 - 1 - strlen_P(data);
+      uint8_t n = LCD_WIDTH - 1 - 1 - strlen_P(data);
     #else
-    	uint8_t n = LCD_WIDTH - 1 - 2 - strlen_P(data);
+      uint8_t n = LCD_WIDTH - 1 - 2 - strlen_P(data);
   #endif
     lcd.setCursor(0, row);
     lcd.print(pre_char);
     lcd_printPGM(pstr);
     lcd.print(':');
    #if LCD_WIDTH < 20
-    	lcd.setCursor(LCD_WIDTH - strlen(value), 1);
+      lcd.setCursor(LCD_WIDTH - strlen(value), 1);
     #else
-    	lcd.setCursor(LCD_WIDTH -1 - strlen(value), 1);
+      lcd.setCursor(LCD_WIDTH -1 - strlen(value), 1);
    #endif
     lcd.print(value);
 }
     //set the LEDS - referred to as backlights by the LiquidTWI2 library 
     static uint8_t ledsprev = 0;
     uint8_t leds = 0;
-    if (isHeatingBed()) leds |= LED_A;
-    if (isHeatingHotend(0)) leds |= LED_B;
+    if (target_temperature_bed > 0) leds |= LED_A;
+    if (target_temperature[0] > 0) leds |= LED_B;
     if (fanSpeed) leds |= LED_C;
     #if EXTRUDERS > 1  
-      if (isHeatingHotend(1)) leds |= LED_C;
+      if (target_temperature[1] > 0) leds |= LED_C;
     #endif
     if (leds != ledsprev) {
       lcd.setBacklight(leds);