relax SVN archive

Added the model argument to the dispersion target function class to select between different equations.

Fix for the Relax_disp.test_curve_fitting_cpmg_fast system test variable names.

The relaxation dispersion specific analysis code now uses the Python target function rather than the C.

Created a very basic initial target function class for relaxation dispersion.

This code is a translation of Sebastien Morin's C code in the old relax_disp branch. This old code
can be checked out with the commands:

$ svn co http://svn.gna.org/svn/relax/branches/relax_disp/maths_fns/relax_disp.c@r18123
$ svn co http://svn.gna.org/svn/relax/branches/relax_disp/maths_fns/relax_disp.h@r18123

Created the lib.dispersion.equations module.

This is a translation of Sebastien Morin's C code in the old relax_disp branch. The old C files can
be checked out with the command:

svn co http://svn.gna.org/svn/relax/branches/relax_disp/maths_fns/dispersion.c@r18123
svn co http://svn.gna.org/svn/relax/branches/relax_disp/maths_fns/dispersion.h@r18123

Updates for the relaxation dispersion system test scripts for the newer design of relax.

A number of changes were required as the code was quite old.

The cpmg_frq argument of the relax_disp.cpmg_frq user function can now be an integer as well as a float.

The cpmg_frq argument of the relax_disp.cpmg_frq user function can now be None.

Some more fixes to make the Relax_disp.test_read_r2eff system test pass.

These are again changes needed due to the trunk now being very different.

Fix for the relax_data.read user function call in the Relax_disp.test_read_r2eff system test.

The column numbers must be supplied.