make sure aligned structures/classes use the btAlignedAlloc/btAlignedFree, by overriding the operator new/delete for that struct/class.

integrated some contributions from IBM Germany for libspe2

src/BulletCollision/CollisionShapes/btTriangleIndexVertexArray.h

@@ -24,6 +24,8 @@ subject to the following restrictions:
 ///todo: explain with pictures
 ATTRIBUTE_ALIGNED16( struct)	btIndexedMesh
 {
+	BT_DECLARE_ALIGNED_ALLOCATOR();
+
 	int			m_numTriangles;
 	const unsigned char *		m_triangleIndexBase;
 	int			m_triangleIndexStride;
@@ -49,6 +51,8 @@ ATTRIBUTE_ALIGNED16( class) btTriangleIndexVertexArray : public btStridingMeshIn
 		
 public:
 
+	BT_DECLARE_ALIGNED_ALLOCATOR();
+
 	btTriangleIndexVertexArray()
 	{
 	}