relax SVN archive

The 'relax -v' command is now used for the dispersion model profiling script initial printout.

This is to show the two different relax versions being compared.

Added a relaxation dispersion model profiling log file for relax version 3.2.1 vs. 3.2.0.

This is the output from the dispersion model profiling master script. It shows a 2.2 times increase
in speed for the B14 and B14 full models, with all other models remaining at the same speed. This
matches the changes for relax 3.2.1 (https://gna.org/forum/forum.php?forum_id=2462), the main
feature of which is a major bugfix for the B14 models.

Removed a tonne of unused imports from the dispersion model profiling scripts.

This is to allow most of the scripts to run on the relax 3.1.x versions, as well as to clean up the
scripts. The unused imports were found using the command:

pylint test_suite/shared_data/dispersion/profiling/*.py --disable=all --enable=unused-import

Fix for a mistake introduced in the previous commit (r24252).

The printout of copied files was incorrect.

Improved the relax version printouts for the dispersion model master profiling script.

This now reports both relax versions.

Improved how the relax installation path is determined in the status object.

If the path cannot be found, the current working directory is then checked if it is where relax is
installed. This is needed when importing modules outside of relax.

Implemented profiling script for LM63, 3 site.

Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.

Copied profiling scripts, to be used for 3site models and mmq models.

Moved numerical solution matrices into the corresponding lib function.

Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.

Split matrix_exponential_rankN into matrix_exponential_rank_NE_NS_NM_NO_ND_x_x and matrix_exponential_rank_NS_NM_NO_ND_x_x.

Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.