relax SVN archive

This is the branch related to implement fitting R1 in R1rho analysis.

sr #3135(https://gna.org/support/?3135): Optimisation of the R1 relaxation rate for the off-resonance R1rho relaxation dispersion models.

Added graphs and results for run with MC=2000, for systemtest Relax_disp.test_r1rho_kjaergaard_auto().

This is to be able to extend graph testing for interpolated R1rho graphs, and to add figures to the latex manual.

Fix to unit tests, after changing the name of matrix_exponential function.

Fixes for numpy version under 1.8, when striding through data.

Added warning message to auto analysis in relax disp, if numpy is below 1.8 and using numerical model.

This will make the analysis 5-6 times slower.

Replaced all matrix_exponential functions in numerical models to use the new general matrix_exponential function.

Fix for eye matrix being wrong formed.

Removed all un-used helper functions, and matrix exponential functions.

They are now condensed to the fewest possible functions.

Changed to the matrix_exponential function for NS R1rho 2site.

Made new general stride helper function and matrix_exponential function.