relax SVN archive

Added the public domain LaTeX nth.sty style file for the user manual.

Some LaTeX distributions do not have this style file and, as it is public domain, it can be
legally distributed with relax allowing the PDF manual to compile on more systems.

Fixes for weird print statements with double brackets generated by the 2to3 Python conversion script.

Fixes for the frame order specific analysis sim_pack_data() method for the alignment tensor data.

Activated optimisation and MC simulations in the Frame_order.test_cam_pseudo_ellipse() system test.

In the base class for the CaM frame order tests, the grid search has been deactivated and the
minimisation parts limited to 10 iterations. This is needed for the test to not take forever.

Removed a debugging printout.

Python 3 fixes for one of the test data scripts - print statement with function call replacements.

Python 3 fixes for non-used Python code - converted print statements to function calls.

Python 3 fixes for the script for generating plots of magnetic field lines.

The command used was:
2to3 -w graphics/wizards/dipole_pair/VectorFieldPlot.py

Another print statement to function Python 3 fix for the user manual.

The python print statements in the user manual are now function calls to be Python 3 compatible.