relax SVN archive

Some small cosmetic changes to the spheroid diffusion tensor system tests.

For some reason, the diffusion tensor PDB file for the oblate tensor now has a slight rotation.

This rotation is about the unique axis of the tensor, so this gives a different PDB file, but the
representation is the same.

Fix for the creation of the oblate spheroid geometric object PDB file.

The x and z axes need to be swapped now for the oblate tensor.

Some more fixes for handling the diffusion tensor data structure 'spheroid_type' variable properly.

Similar fix as in r11670, but for setting MC sim data.

Fix for the updating of the rotation and tensor MC sim objects for the spheroidal diffusion.

This problem was only recently introduced.

Dpar_unit is no longer passed into calc_rotation() for spheroidal diffusion, as it is not needed.

Some rotation matrix check fixes for the diffusion tensor unit tests.

Removed some debugging code.

Fixes for the diffusion tensor system tests.

The spheroidal tensors are now correctly checked.