relax SVN archive

Updated the copyright.

Added __init__() to Test_scientific to skip all tests of this class if the module is not installed.

The method adds the tests to the status.skipped_tests list and executes the base class __init__()
method.

The RelaxTestLoader now skips tests if the are in the status.skipped_test list.

This is instead of the skip flag being set or not.

System and unit tests can be skipped is the skip flag is set inside the TestCase class.

Added an empty list to the relax status object to store info about skipped system and unit tests.

Fix for the copyright notice.

Added a replacment loadTestsFromTestCase() method to RelaxTestLoader.

This method will later be modified to skip certain tests.

Fixed the import of the RelaxTestLoader.

The RelaxTestLoader has been added as a replacement for unittest.TestLoader.

This empty class will in the end handle the skipping of tests when Python packages optional for
relax are not installed. The unit_test_runner uses this class if it can import it, otherwise it
falls back to unittest.TestLoader to allow for non-relax usage.

Updated the introductory copyright notice.