relax SVN archive

Docstring fix for the lib.dispersion.ns_2site_star.r2eff_ns_2site_star() function.

Merged revisions 20265 via svnmerge from
svn+ssh://bugman@.../svn/relax/trunk

........
r20265 | bugman | 2013-07-09 14:36:10 +0200 (Tue, 09 Jul 2013) | 3 lines

Release checklist minfx and bmrblib version update to the newest versions.
........

Spacing fixes for the lib.dispersion.ns_2site_star module as determined by the 2to3 program.

This is the Python 2 to 3 conversion program.

Huge amounts of documentation added to the lib.dispersion.ns_2site_star module.

This comes from Paul Schanda's (https://gna.org/users/pasa) post at:
http://thread.gmane.org/gmane.science.nmr.relax.devel/4132/focus=4152

Added the functions for creating the X-axis pi-pulse rotation matrices in lib.dispersion.ns_matrices.

The code comes from the 'fitting_main_kex.py' file attached to https://gna.org/task/?7712#comment3
(https://gna.org/support/download.php?file_id=18263).

Docstring fix for the lib.dispersion.ns_matrices.rcpmg_2d() function.

Created the lib.dispersion.ns_matrices module.

This module contains a collection of functions for generating the relaxation matrices for the
numerical solutions to the Bloch-McConnell equations for relaxation dispersion.

The code comes from the 'fitting_main_kex.py' file attached to https://gna.org/task/?7712#comment3
(https://gna.org/support/download.php?file_id=18263).

Added a module docstring to lib.linear_algebra.matrix_power.

Added the missing mpower() function as lib.linear_algebra.matrix_power.square_matrix_power().

This is needed by the lib.dispersion.ns_2site_star module.

The function comes from the 'fitting_main_kex.py' file attached to comment 3 of task #7712
(https://gna.org/task/?7712#comment3, https://gna.org/support/download.php?file_id=18263).
The mpower() function was copied and modified to suite relax's coding conventions.

Added parameter conversions to go from pA and kex to kge and keg.

This is for the 'NS 2-site star' numerical model. The conversions have been added to the start of
the target function to minimise mathematical operations to speed up the code.