Add a string parameter to kill()

Makes the output on the LCD adjustable.

Marlin/watchdog.cpp

@@ -43,12 +43,9 @@ void watchdog_reset()
 #ifdef WATCHDOG_RESET_MANUAL
 ISR(WDT_vect)
 { 
-    //TODO: This message gets overwritten by the kill() call
-    LCD_ALERTMESSAGEPGM("ERR:Please Reset");//16 characters so it fits on a 16x2 display
-    lcd_update();
     SERIAL_ERROR_START;
     SERIAL_ERRORLNPGM("Something is wrong, please turn off the printer.");
-    kill(); //kill blocks
+    kill(PSTR("ERR:Please Reset")); //kill blocks //16 characters so it fits on a 16x2 display
     while(1); //wait for user or serial reset
 }
 #endif//RESET_MANUAL