relax SVN archive

Small change to the find_unused_imports.py printouts.

Lots of import cleanups including removal of '*' imports, missing imports, and unused imports.

Shifted the spin_id_to_data_list() function from pipe_control.selection to lib.selection.

This is because the selection object requires this function, and the function has nothing to do with
the relax data store.

Fixes for the unit tests of the lib.selection module.

The contains_*() methods now should be used. And the test_Selection_ful_spin_id() unit test has
been completely deleted as this way of checking the selection object is no longer valid.

Import fixes for the test_suite.unit_tests._lib._frame_order.test_matrix_ops module.

Missing import in the unit test module for the lib.frame_order.matrix_ops module.

Fixes for the TestCase class names for a number of lib package modules.

As the test class name was incorrect, previously the test suite was skipping these silently. This
was dangerous!

Added a printout to the unit_test_runner.py if the TestCase class cannot be found.

This normally continued the test loading silently without warning that the TestCase class name is
missing or incorrect.

More cleanups of the unit_test_runner.py script.

The unit_test_runner.py script now defaults to verbose mode.