relax SVN archive

Wrote the test_omp_analysis() system test for testing a simple model-free analysis on the OMP data.

Bug fix for the Unit_test_runner.

The get_module_relative_path() function was sometimes failing because of the format of the
package_path argument. This should be a string but, when run from an outside directory, often this
path would already be split up into the segment path list. The fix just catches this so that the
function doesn't try to segment the segmented list.

Sent the absolute relax path into the Unit_test_runner.

Reverted r6573, as this was committed by accident.

The command used was:
svn merge -r6573:6572 .

Sent the absolute relax path into the Unit_test_runner.

Docstring fix in load_test_case(). The header line is now one line.

Missing import.

Absolute path fix for the test_5_state_xz() system test.

Bug fix for xml_create_str_element(), the pipe container 'self' was incorrectly referenced.

Added the missing self arg to xml_create_str_element().