First stage in refactoring Bullet: moved Bullet Collision and Dynamics and LinearMath into src folder, and all files in Collision Detection and Dynamics have bt prefix.

Made all buildsystems to work again (jam, msvc, cmake)

src/BulletDynamics/Vehicle/btVehicleRaycaster.h

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2005 Erwin Coumans http://continuousphysics.com/Bullet/
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies.
+ * Erwin Coumans makes no representations about the suitability 
+ * of this software for any purpose.  
+ * It is provided "as is" without express or implied warranty.
+*/
+#ifndef VEHICLE_RAYCASTER_H
+#define VEHICLE_RAYCASTER_H
+
+#include "LinearMath/SimdVector3.h"
+
+/// VehicleRaycaster is provides interface for between vehicle simulation and raycasting
+struct VehicleRaycaster
+{
+virtual ~VehicleRaycaster()
+{
+}
+	struct VehicleRaycasterResult
+	{
+		VehicleRaycasterResult() :m_distFraction(-1.f){};
+		SimdVector3	m_hitPointInWorld;
+		SimdVector3	m_hitNormalInWorld;
+		SimdScalar	m_distFraction;
+	};
+
+	virtual void* CastRay(const SimdVector3& from,const SimdVector3& to, VehicleRaycasterResult& result) = 0;
+
+};
+
+#endif //VEHICLE_RAYCASTER_H
+