relax SVN archive

The curve fitting system test script now names the spins so they can be matched to the assignments.

Fixed a name clash between the intensity arg and intensity fn.

int_col is now passed into intensity_xeasy(), just in case.

The int_col arg is now being passed into all the required functions.

Converted the number_of_header_lines() function to the new design.

Added another missing import.

Added a missing import.

Fixed the set up of the num_spectra global object.

Removed the call to the data_init() method.

Converted the read function to the new relax design.