New setup.py which builds vsip module using the libvsip.a library file directly. Previously everything was built from source.
Add new file setupOld.py containing the old setup.py setup file.
Minor editing to remove py_module directive to setup which I believe is not needed.
This was causing an error on the first build becaue swig had no yet created the vsip.py file.
Removed wrapper c source file in Extension directive in new setup.py replacing with vsip.i file. Distutils will
call swig for you removing the need for this step.