relax SVN archive

Completed the Dasha data extraction function.

Values can now be scaled when being read from file.

Minimisation statistics, specifically the chi-squared, are being read from file.

Started to implement the Dasha results extraction function.

Further improvements to the Dasha script creating function.

Fixed the function for executing Dasha.

Improvements to the Dasha script.

Created a diffusion tensor function for returning Dx, Dy, and Dz.

Better support for the diffusion tensor, although it may still be buggy.

Input of bond length and CSA value.

Added the function to create the Dasha script.

Initialised the control of Dasha through relax.

Bug fix.

The OpenDX mapping function is still failing. Therefore the fixing of the diffusion tensor has been
shifted to the OpenDX file 'dx/isosurface_3D.py'.

Bug fix.

The OpenDX mapping function was failing when the diffusion tensor is not fixed. The model-free
function now fixes and then unfixes the diffusion tensor in the 'calculate' function. This kludge
may cause bugs in the future.

Bug fixes.

The proton gyromagnetic ratio has been changed to the higher precision number.

Two functions were improperly referenced. These involve the optimisation of the CSA or bond length
values.