relax SVN archive

Updated the Python 2 to 3 checklist document for the shifting of the 'relax' file to 'relax.py'.

Python 3 preparations - removed all usage of the xrange() in the generic_fns package as none are needed.

The command used was:
2to3 -w -f xrange .

Python 3 preparation - eliminated the unneeded use of xrange().

Python 3 preparation - the use of an absolute module path for import.

Python 3 preparations - the auto_analyses package is now fully Python 2 and 3 compatible.

The command used was:
2to3 -w -f except -f import -f imports -f long -f numliterals -f xrange .

Python 3 preparation - the auto_analyses package now uses absolute paths for the module imports.

Python 3 preparations - the use of the queue module in the status module is now compatible with 2 and 3.

Python 3 preparations - the GUI tests are now fully Python 2 and 3 compatible.

The command used was:
2to3 -w -f except -f import -f imports -f long -f numliterals -f xrange .

Python 3 preparations - the queue modules for both Python versions are now supported in the GUI tests.

Python 3 preparations - the test_suite.gui_tests package now uses absolute module path imports.