Import Improved Breakdowns patch

Fix trailing whitespace

http://www.tt-forums.net/viewtopic.php?p=1146419#p1146419

src/vehicle_type.h

@@ -77,6 +77,18 @@ static const uint MAX_LENGTH_VEHICLE_NAME_CHARS = 32; ///< The maximum length of
 /** The length of a vehicle in tile units. */
 static const uint VEHICLE_LENGTH = 8;
 
+/* The different types of breakdowns */
+enum BreakdownType {
+	BREAKDOWN_CRITICAL  = 0, ///< Old style breakdown (black smoke)
+	BREAKDOWN_EM_STOP   = 1, ///< Emergency stop
+	BREAKDOWN_LOW_SPEED = 2, ///< Lower max speed
+	BREAKDOWN_LOW_POWER = 3, ///< Power reduction
+	/* Aircraft have totally different breakdowns, so we use aliases to make things clearer */
+	BREAKDOWN_AIRCRAFT_SPEED      = BREAKDOWN_CRITICAL,  ///< Lower speed until the next airport
+	BREAKDOWN_AIRCRAFT_DEPOT      = BREAKDOWN_EM_STOP,   ///< We have to visit a depot at the next airport
+	BREAKDOWN_AIRCRAFT_EM_LANDING = BREAKDOWN_LOW_SPEED, ///< Emergency landing at the closest airport (with hangar!) we can find
+};
+
 /** Vehicle acceleration models. */
 enum AccelerationModel {
 	AM_ORIGINAL,