add joint/constraint solver support (using CPU, Bullet 2.x solver), in combination with GPU contact solver

demo/gpudemo/rigidbody/Bullet2GpuDemo.h

@@ -0,0 +1,31 @@
+#ifndef BULLET2_GPU_DEMO_H
+#define BULLET2_GPU_DEMO_H
+
+#include "GpuRigidBodyDemo.h"
+
+class Bullet2GpuDemo : public GpuRigidBodyDemo
+{
+protected:
+
+	class btGpuDynamicsWorld* m_gpuDynamicsWorld;
+
+public:
+
+	Bullet2GpuDemo(){}
+	virtual ~Bullet2GpuDemo(){}
+	virtual const char* getName()
+	{
+		return "Bullet2Gpu";
+	}
+
+	static GpuDemo* MyCreateFunc()
+	{
+		GpuDemo* demo = new Bullet2GpuDemo;
+		return demo;
+	}
+
+	virtual void setupScene(const ConstructionInfo& ci);
+	virtual void	destroyScene();
+};
+#endif //BULLET2_GPU_DEMO_H
+