relax SVN archive

Fix to weight properly according to if minimising with direct Jacobian or chi2 Jacobian.

task #7822(https://gna.org/task/index.php?7822): Implement user function to estimate R2eff and associated errors for exponential curve fitting.

Increased the number of time points for exponential curve fitting to 3.

Fix to systemtest: test_estimate_r2eff_err_auto, which now checks the values for the direct Jacobian.

task #7822(https://gna.org/task/index.php?7822): Implement user function to estimate R2eff and associated errors for exponential curve fitting.

Activated all method try in: systemtest Relax_disp.test_estimate_r2eff_err_methods.

This is to fast estimate errors from all different methods.

task #7822(https://gna.org/task/index.php?7822): Implement user function to estimate R2eff and associated errors for exponential curve fitting.

Implemented the direct Jacobian in Python, to be independent of C-code in development fase.

task #7822(https://gna.org/task/index.php?7822): Implement user function to estimate R2eff and associated errors for exponential curve fitting.

Fix for systemtest: test_estimate_r2eff_err_auto()

The Jacobian to estimate the errors has been changed from the direct function Jacobian, to the
Jacobian of the chi2 function.

This changes the R2eff error predictions, and hence parameter fitting.

task #7822(https://gna.org/task/index.php?7822): Implement user function to estimate R2eff and associated errors for exponential curve fitting.

Created the select.display user function.

This simply displays the current spin selections of all spins. In the future it can be extended to
display the interatomic data container selections, domain selections, etc.

Parameter precision lowered for Relax_disp.test_estimate_r2eff_err_auto().

This is due to change to C-code.

task #7822(https://gna.org/task/index.php?7822): Implement user function to estimate R2eff and associated errors for exponential curve fitting.

Added systemtest Relax_disp.test_bug_atul_srivastava(), to cathch a bug missing raising a Relax Error, since the setup points to a situation where the data shows it is exponential fitting, but only one time point is added per file.

This follows:

http://thread.gmane.org/gmane.science.nmr.relax.user/1718
http://thread.gmane.org/gmane.science.nmr.relax.user/1735

Specifically, data was attached here:
http://thread.gmane.org/gmane.science.nmr.relax.user/1735/focus=1736

Added Relax Error, if less than 2 time points is used for exponential curve fitting in R2eff.

This follows:

http://thread.gmane.org/gmane.science.nmr.relax.user/1718
http://thread.gmane.org/gmane.science.nmr.relax.user/1735

Specifically, data was attached here:
http://thread.gmane.org/gmane.science.nmr.relax.user/1735/focus=1736