relax SVN archive

Changed the frame order pseudo-ellipse equations.

These should be numerically more stable.

Shifted populate_2nd_eigenframe_iso_cone_free_rotor() to be in the Kronecker product form.

Modified rotate_daeg() to operate on the Kronecker product form of the frame order matrix.

The frame order target functions now use reduce_alignment_tensor_symmetric().

Created the reduce_alignment_tensor_symmetric() function for computation efficiency.

Modified reduce_alignment_tensor() to be in the Kronecker product notation.

Removal of the reduce_alignment_tensor_reverse() frame order function.

This is not being used, and is of no use!

Added support for the isotropic cone model, that is with a torsion angle restriction of sigma_max.

Renamed to isotropic cone functions to the free rotor isotropic cone.

The model name has changed, as the torsion angle was unrestricted in the earlier code.

Simplified and sped up the torsionless pseudo ellipse.

6 functions, and hence 6 numerical integrations, have been deleted as they are repetitive of other
frame order matrix elements.