relax SVN archive

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.

Ordering of the functions.

Fix for the reduce_and_rot() method, the self arg was missing.

Simplified compile_2nd_matrix_iso_cone() by using rotate_daeg().

The compile_2nd_matrix_*() functions now build the rotation matrix themselves as this is not shared
code.

Abstracted the common code in compile_2nd_matrix_*() into rotate_daeg().

This will significantly simplify the addition of all of the 12 models.