relax SVN archive

Fix for the system test script. The RDC and PCS data was not being read correctly.

Added checks for the presence of any extractable data from the file.

The file data is now always checked.

Modified the data reading print outs.

Added a print outs for the reading of RDCs and PCSs.

Activated the RDC and PCS tensor fitting system test.

Added a script for testing out the use of RDCs and PCSs to find the alignment tensor.

Modified the full_analysis.py script to name spins if the sequence data contains no spin name info.

This is in response to the post by Pierre-Yves Savard <Pierre-Yves dot Savard att bcm dot ulaval dot
ca> at https://mail.gna.org/public/relax-users/2009-02/msg00001.html (Message-id:
<4991A4A6.5070309@...>).

Decreased the synthetic alignment by half to bring the max PCS into the 3 ppm range.

The spins from 'unresolved' are now removed from the RDC and PCS lists.