relax SVN archive

Extended the system test of a minimal model-free analysis using the OMP relaxation data.

This now includes the basics of the 'final' stage of the 'full_analysis.py' script.

Bug fix for model elimination in 'full_analysis.py'.

Added a check to the 'full_analysis.py' script to avoid model elimination of the global model.

Fix for bug #12409 (https://gna.org/bugs/index.php?12409).

This bug is the failure of the final stage of the 'full_analysis.py' script. If no models exist in
the PDB file, a model number is no longer passed into add_struct().

Added a fix for the aliasing of a PDB file for when no structural data exists in the data pipe.

This is related to bug #12409 (https://gna.org/bugs/index.php?12409), so that rather than an
unrelated RelaxError, the structure is not aliased is the structural data could not be loaded in
another data pipe.

Fix for the checks in the test_load_scientific_results() system test.

Partial fix for bug #12409 (https://gna.org/bugs/index.php?12409).

Updated the add_struct() method to match that of the internal structural object.

Created the new test_load_scientific_results() system test.

This test checks the loading of a PDB file using the Scientific python PDB internal object when
reading a results file. The test_load_results() system test has been renamed to
test_load_internal_results().

Made the structure reading from a results file system test specific to the internal structure object.

Partial fix for bug #12407 (https://gna.org/bugs/index.php?12407).

This catches the "TypeError: unsupported operand type(s) for *: 'float' and 'NoneType'" error. If
the local or global tm is missing for some reason, the eliminate function returns False indicating
that the model has not been eliminated.

Fix for the test_tm_51ns() system test.

The model 'tm4' is set rather than 'm4'.