added debug rendering for planeshape

added void* userpointer (+getUserPointer/setUserPointer) to each btCollisionShape

src/BulletCollision/CollisionShapes/btCollisionShape.h

@@ -25,9 +25,12 @@ subject to the following restrictions:
 ///btCollisionShape provides interface for collision shapes that can be shared among btCollisionObjects.
 class btCollisionShape
 {
+
+	void* m_userPointer;
+
 public:
 
-	btCollisionShape() 
+	btCollisionShape() : m_userPointer(0)
 	{
 	}
 	virtual ~btCollisionShape()
@@ -88,6 +91,19 @@ public:
 	virtual void	setMargin(btScalar margin) = 0;
 	virtual btScalar	getMargin() const = 0;
 
+	
+	///optional user data pointer
+	void	setUserPointer(void* userPtr)
+	{
+		m_userPointer = userPtr;
+	}
+
+	void*	getUserPointer() const
+	{
+		return m_userPointer;
+	}
+
+
 };	
 
 #endif //COLLISION_SHAPE_H

src/BulletCollision/CollisionShapes/btConvexInternalShape.h

@@ -17,10 +17,7 @@ class btConvexInternalShape : public btConvexShape
 	
 	btScalar	m_collisionMargin;
 
-	btScalar	m_padding[2];
-
-
-
+	btScalar	m_padding;
 
 public:
 
@@ -93,6 +90,8 @@ public:
 		btAssert(0);
 	}
 
+
+	
 };