relax SVN archive

Shifted the structural data to the end of the XML results file.

This is in preparation for dumping all the structural info into the file.

The basic structural object data is now converted to XML in the results file.

Shifted the pipe container xml_create_str_element() method to the to_xml() structural object method.

Added some checks to the test_load_results() system test.

Added a system test to check the loading of a PDB file using the information in a results file.

Added a script to generate a results file containing a single PDB structure.

The results file has been added too.

Another fix for the structural object comparison in duplicate_data().

Skipped the structural object base class methods as well now in duplicate_data().

Fix for the structure checking in duplicate_data().

Fixed the RelaxError printouts in duplicate_data().