relax SVN archive

Python 2.3- fixes - the Modelfree4 and Dasha system tests are now skipped if the subprocess module is missing.

Python 2.3 and earlier fix for the Test_relax_re.test_search() unit test.

The unittest assertTrue() and assertFalse() methods do not exist, so assertEqual() is used instead.

Python 2.3 and earlier fix - the subprocess module is only imported when present.

This is for the stereochem_analysis auto-analysis, but the import kills all of the auto-analyses.

Python 2.3 fix - eliminated the superfluous operator.itemgetter() call in the diffusion tensor code.

Python 3 fix for the ScientificPython PDB reader unit tests.

The order of the keys returned by a dictionary's keys() method changes randomly in Python 3, so now
they are sorted prior to comparison.

Redesigned the reset user function backend.

This now no only clears out the relax data store, but it also resets the GUI if present. Some of
the reset code comes from the tearDown() method of the GUI tests. All windows but the main GUI
window are closed and the relax controller gauges are set to zero and the log window text cleared.

These changes should allow GUI tests after an error or failure to pass, something which is currently
problematic.

Disabled the initial relax intro print out from the GUI when running the test suite.

This prevents the intro text from appearing in the first failed test.

Fix for the Mf.test_read_results_1_3_v2_broken() system test for Python 3.2.

The object comparison method no longer converts dictionaries to strings for the comparison, as the
string version is different in different Python versions.

Fix for the Mf.test_write_results() system test for the Python 3 versions.

The logic for determining Python 3 versions was broken and the incorrect files was used for Python
3.1.

Python 2.4 and earlier fix for the GUI.

Try-except-finally statement blocks are not supported, so these have to nested in two try statements.