relax SVN archive

Copyright notice update.

Converted the read() method to the new relax design.

Fixed the paths to the data files in the relaxation curve fitting script.

Enabled the relaxation curve fitting system test.

This was done by writing a small method, test_curve_fitting(), which executes the relax_fit.py
script.

Removed the commented out file writing user function.

Fixed the data pipe creation.

Converted the relaxation curve fitting script to the new relax design.

Removed the call to state.save().

Shifted the relaxation curve fitting data into the 'test_suite/shared_data/' directory.

Shifted the relaxation curve fitting script to the scripts directory.