relax SVN archive

Bug fix for running solely the system/functional tests.

The interpeter, which is essential for the tests, is now loaded.

Changed the --unit-test command line option to --unit-tests.

The old option still works thanks to the optparse package.

Added the command line option --system-tests to run solely the relax system/functional tests.

Removed the import of the now non-existant 'Colour' class.

Updated the copyright notice by adding the date the file was originally created.

Updated the copyright notice and added some comments.

Updated the copyright notice and added some comments.

Fixed the appending of the molmol_classic_style docstring.

The function used to be called simply classic.

Removed all of the imports of the now non-existant 'Colour' class.

Converted all the class methods of the colour module to functions.