Import departure boards patch

src/timetable.h

@@ -15,6 +15,8 @@
 #include "date_type.h"
 #include "vehicle_type.h"
 
+#define WALLCLOCK_NETWORK_COMPATIBLE 0 ///< Whether wallclock should preserve network compatibility. If so, then timetable start dates cannot be set exactly using minutes.
+
 void ShowTimetableWindow(const Vehicle *v);
 void UpdateVehicleTimetable(Vehicle *v, bool travelling);
 void SetTimetableParams(int param1, int param2, Ticks ticks);