relax SVN archive

Decreased the accuracy of the PDC reading system test, as the PDC data is not accurate to 7 places.

The R1 value and error are now being read directly from the PDC file.

Fix for the PDC reading system tests, the data now matches the new PDC files.

Fix for the pdc.read() back-end for reading NOE data out of the new PDC files.

The PDC NOE conversion script is now taking the data directly from the PDC file.

Updated the Bruker PDC files to the newest versions.

These are taken from the task #7180 (https://gna.org/task/?7180) attached by Peter Neidig as file
#12537, file #12538, and file #12539.

Created a special list-like structure for spin specific data.

This is in response to the post of Pavel Kaderavek <pavel dot kaderavek att gmail dott com>
at https://mail.gna.org/public/relax-devel/2011-02/msg00071.html (Message-id:
<AANLkTi=DQ9KGP+e0ONhZ66XhSzKhuQzFoQcQNwXnVsgG@...>).

Updates for the new R1 Bruker PDC file.

Fixes for the pdc.read() back-end for the NOE PDC file.

Updated the Bruker PDC reading system test for the new R1 data.