relax SVN archive

Fix for the Frame_order.test_axis_perm_x_le_z_le_y_permB system test.

The permuted z-axis needs to be inverted in the test.

Modified the frame order auto-analysis axis permutation algorithm to handle both permutations.

Instead of creating one additional data pipe for the permutations, two are now created for the
permutations 'A' and 'B'. This allows all 3 solutions for the pseudo-elliptic models to be
explored and included in the final model selection process.

Fix for the frame_order.permute_axes for the torsionless pseudo-ellipse model.

The data structure cdp.cone_sigma_max does not exist in this model as cone_sigma_max == 0.0.

Removed the second permutation from the 6 Frame_order.test_axis_perm_* system tests.

A second identical permutation does not necessarily restore the original state.

Implemented the new frame_order.permute_axes backend.

The 3 starting conditions x<y<z, x<z<y, and z<x<y and the two permutations 'A' and 'B' (for each of
these which do not include the starting permutation) are now supported. For these 6 combinations,
the axis and order parameter permutation and the z-axis inversion are selected and applied to the
current system.

Created 6 system tests for the frame_order.permute_axes user function.

This covers the 3 starting conditions (x<y<z, x<z<y, z<x<y) and the two permutations ('A' and 'B')
for each of these which do not include the starting permutation. They replace the original
Frame_order.test_axis_permutation system test with the tests
Frame_order.test_axis_perm_x_le_y_le_z_permA, Frame_order.test_axis_perm_x_le_y_le_z_permB,
Frame_order.test_axis_perm_x_le_z_le_y_permA, Frame_order.test_axis_perm_x_le_z_le_y_permB,
Frame_order.test_axis_perm_z_le_x_le_y_permA, and Frame_order.test_axis_perm_z_le_x_le_y_permB.

Redesigned the frame_order.permute_axes user function frontend.

Previously only cyclic permutations were considered, however non-cyclic permutations are also
allowed when accompanied by an axis inversion. Therefore 3 combinations exist with cone_theta_x <=
cone_theta_y, or 2 when the current combination is excluded.

Added extensive printouts to the frame_order.permute_axes user function.

The axis permutation step in the frame order auto-analysis is now always performed.

If an old results file was found, this step was accidentally skipped.

Made the pivot point in the frame order PDB representation fail-proof.

If the pivot position was outside of the bounds [-1000, 1000], the PDB file creation would fail as
the record would be too long. So now the pivot is shifted to be in these bounds.