relax SVN archive

Fixes for a number of the frame order model unit tests.

The frame order matrix comparison was not correct.

Implemented the rotor frame order matrix model.

This includes the addition of the target function and a unit test.

Implemented the torsionless isotropic cone frame order model.

Fixes for the calls to compile_2nd_matrix_iso_cone_torsionless() in the unit tests.

More debugging printouts have been included throughout.

Added 5 system tests checking the parametric restriction of frame order models.

Fix for the test_pseudo_ellipse() system test.

Added system tests for 5 of the frame order models.

These use synthetic alignment data (tensors) to test the model via the calc() user function. The
tests models include:
iso cone, free rotor
iso cone, free rotor (in the eigenframe)
iso cone
pseudo-ellipse, free rotor (out of frame and in the eigenframe)
pseudo-ellipse.

Big bug fix for the reduce_alignment_tensor() function - the frame order matrix was transposed!!!

The indices were back to front, so the non-symmetric frame order models were failing.

Another numerical simplification to tmax_pseudo_ellipse().

Added 3 unit tests for reduce_alignment_tensor().