relax SVN archive

Try again: Added the blacklist arg to xml_to_object().

Reverted r9538. The wrong file was committed!

The command used was:
svn merge -r9538:9537 .

Added the blacklist arg to xml_to_object().

The data structures of the AlignTensorList class are now packed into the XML file.

Expansion of the test_to_and_from_xml() system test to check more data structures.

Fix for the data_names() method for when no model has been setup.

This allows the frame order data pipe to be written out prior to the model setup.

Reactivated the system tests turned off in r9533.

Bug fix for the test suite.

The temporary files were not always deleted if a .bz2 extension was added! Now relax_io.delete() is
being called to fix this.

Bug fix for the delete function.

The function was failing if the file was missing!

Created a module for alignment tensor related system tests.

Only the single test test_to_and_from_xml() has been created so far. This checks the dumping and
reloading of alignment tensors into an XML file.