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2006-03-14(svn r3857) Add and use GetBridgeRampDirection()tron
Note: This slightly changes the behavior of GetAnyRoadBits() to only return a road piece for the start of the bridge ramp instead of a full ROAD_[XY]
2006-03-08(svn r3795) Add a function to request the orientation of a depottron
2006-03-06(svn r3777) Add some functions to handle tunnelstron
2006-03-06(svn r3773) Shove some semantics down ottd's throat by replacing ints and ↵tron
magic numbers by enums and some related changes
2006-03-05(svn r3766) Add a function to get the RoadBits from an arbitrary tiletron