relax SVN archive

Removed the PY_UNIT_TEST_PATTERN constant as it is in the Unit_test_runner.test_case_patterns list.

Big clean up of cruft from the Test_finder.scan_paths() method.

Removed old commented out code.

Updated the http://nmr-relax.com/download.html page for the i586 package of relax 1.3.6.

The Mf.test_read_results_1_2_tem1 system test is now checking all of the model-free data correctly.

Fix for bug #17417 (https://gna.org/bugs/?17417).

The model_free _model_setup() method should handle no model-free model being set when reading
relax 1.2 results files. The problem was a check for the local_tm parameter in the parameter array,
as this was also set to None.

Added a system test for reading the final results file from TEM-1.

This file is severely truncated, and is just to trigger a bug.

Shifted the location of the truncated PSE-4 data for the relax 1.2 results reading system test.

Created the residue.copy user function window and menu entry.

The user function base class method combox_box() arg 'choices' now defaults to an empty list.