relax SVN archive

The command used was:
svn merge -r21803:r21802 .

.....
r21803 | bugman | 2013-12-06 09:07:56 +0100 (Fri, 06 Dec 2013) | 5 lines
Changed paths:
M /trunk/specific_analyses/relax_disp/disp_data.py

Neutralised the negative sign of the 15N gyromagnetic ratio in the return_offset_data() method.

This is to match the behaviour of Dmitry Korzhnev's cpmg_fit software.
.....