relax SVN archive

Modified the relax_fit.test_saturation_recovery system test to check for Iinf instead of I0.

Alphabetical ordering of the C function imports in the target_functions.relax_fit_wrapper module.

Renamed all of the relaxation curve-fitting target functions.

This includes all of the C functions which are model specific, by appending '_exp' to the current
names to now be func_exp, dfunc_exp, d2func_exp, jacobian_exp, and jacobian_chi2_exp. And all of
the Relax_fit_opt target function class *_wrapper() methods to *_exp(). The target function class
is now only aliasing the *_exp() methods when the model is set to 'exp'.

Small fix for the relax_fit.select_model user function.

The exponential model name is now being passed into the target function class.

The model as specified by the relax_fit.select_model user function is now finally being sent into
the target function, in this case the Relax_fit_opt class in target_functions.relax_fit_wrapper.

Fix for the relax_fit.select_model user function backend for the 'sat' model.

Modified the Relax_fit.test_saturation_recovery system test script.

The relax_fit.select_model user function call now selects the 'sat' model.

Added the saturation recovery experiment to the relax_fit.select_model user function.

This simply adds a new option and sets up a different parameter set [Rx, Iinf].

Created the Relax_fit.test_saturation_recovery system test.

This follows from the discussion of
http://thread.gmane.org/gmane.science.nmr.relax.devel/7308/focus=7369.

Added a copyright notice for Andras Boeszoermenyi for the newly added saturation-recovery R1 script.

This change follows the discussion in the message
http://thread.gmane.org/gmane.science.nmr.relax.devel/7308/focus=7369.