Introduced the generate_spin_id_data_array() function in the generic intensity file code.
The code now support a 'fake' generic format (with defined columns). Much more work is needed to
make this code more versatile to support 'any' format.
This follows a post by Edward at:
https://mail.gna.org/public/relax-devel/2008-12/msg00027.html
(Message-id: <7f080ed10812041223y1fe40665u90cfef9144cc5ca5@...>)
