relax SVN archive

Lowered range for grid search by factor 10 for kex to now between 1-10000.

Regarding bug #21953, (https://gna.org/bugs/index.php?21953) - Weird performance of grid search

Modified systemtest for cleaner implementation of tests.

Regarding bug #21953, (https://gna.org/bugs/index.php?21953) - Weird performance of grid search

Made name for systemtest shorter and moved data to shorter folder name.

Regarding bug #21953, (https://gna.org/bugs/index.php?21953) - Weird performance of grid search

Python 3 fix for the Relax_disp.test_kteilum_mhsmith_eschulz_lcchristensen_gsolomentsev_moliveberg_makke_sod1wt_t25_to_cr72 system test.

The xrange builtin function does not exist in Python 3.

Python 3 fix for the Library.test_library_independence software verification test.

Python 3 fixes throughout the codebase.

The command used was:
2to3 -j 4 -w \
-f buffer \
-f idioms \
-f set_literal \
-f ws_comma \
-x except \
-x import \
-x imports \
-x long \
-x numliterals \
-x xrange \
.

More path fixes for the sample scripts to allow them to run on MS Windows and Mac OS X.

This is for the relaxation dispersion R1rho_analysis.py script and the N-state model
conformation_analysis_rdc+pcs.py script. These scripts should be modified by the user for their own
data, so they should not encounter this problem when using the scripts normally.

Fix for the cpmg_analysis.py relaxation dispersion sample script.

This was reported as sr #3142 (http://gna.org/support/?3142).

The problem was that one of the paths was in the Linux/Unix format and hence if the path is not
changed by the user, then the script will not work for them if they are using MS Windows or Mac OS
X.

Fix for the Relax_disp.test_korzhnev_2005_15n_sq_data system test for certain MS Windows systems.

This was reported as sr #3142 (http://gna.org/support/?3142).

The problem was simply the lower precision of this system.

The debugging command line option no longer turns on RelaxWarning tracebacks.

These tracebacks can be separately turned on with the --traceback command line option.