relax SVN archive

Created a system test script for the inversion-recovery function.

This is based on a copy of the script 'relax_fit_exp_2param_neg.py'.

Created a new test for the 'exp_3param_inv_neg' (inversion-recovery) function.

This is based on a duplication of 'relax_fit.test_curve_fitting_volume_exp_2param_neg()'.

Added '_exp_2param_neg' in the name for the tests currently using the function 'exp_2param_neg'.

This is the first step before making a test for the 'inversion-recovery' function 'exp_3param_inv_neg'.

Modified the tests (and sample script) for the new name of the exponential decay function.

Indeed, the name 'exp' for the exponential decay function has been changed to
'exp_2param_neg'.

Placed the different options for function relax_fit.selec_model() into a list.

This is instead of the 'or' statement used before which was introducing a bug...

This was discussed in a thread at:
https://mail.gna.org/public/relax-devel/2011-06/msg00197.html
Message-id: <4DFB66B2.1090805@...>

The panels inside the wizard can now expand to the full size.

Generating two new functions '__parse_xyz_record()' and 'fill_object_from_xyz()'.

This is Han's patchhttps://gna.org/task/download.php?file_id=13252 attached to the task
http://gna.org/task/?7404.

Two new functions '__parse_xyz_record()' and 'fill_object_from_xyz()' were generated in the class
'MolContainer()' in the file 'generic_fns/structure/internal.py'.

Debugging and cleaning up the user functions load_xyz() and __parse_models_xyz().

This is Han's patch https://gna.org/task/download.php?file_id=13251 attached to the task
http://gna.org/task/?7404.

Debugging and several print outs in the user functions load_xyz() and __parse_models_xyz() in
generic_fns/structures/internal.py have been removed.

Shifted the add_buttons() method from the panel to the wizard.

A number of fixes for the wizard.