3D mouse support

Mathworks really should support the 3D mouse by default, but until they do I created a simple hack to allow one to use a 3D mouse to rotate a figure.

The function connects to the mouse driver COM object and uses a timer function to poll the mouse position and rotation. To prevent excessive resource use the time step is increased when the mouse is not in use.

Some more work is needed, but hopefully this will inspire Mathworks to include support for a 3D mouse in the next release.

Visit http://www.3dconnexion.com/ to find out what a 3D mouse is.