relax SVN archive

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.

Fixed the C module compilation by adding numpy.get_include() to the list of C include flags.

Converted the C modules to use numpy rather than Numeric.

This is going to require the use of numpy.get_include() to find the location of the headers to
re-enable compilation.

Added a few single letter command line options for running the test-suite.