Implemented the pipe_control.mol_res_spin.format_info_full() function.
This follows from http://thread.gmane.org/gmane.science.nmr.relax.scm/22522/focus=6534.
This is a verbose representation of the spin information which can be used for presenting to the
user. Functions for shorter string versions will also be of great use, for example as described by
Troels at http://thread.gmane.org/gmane.science.nmr.relax.scm/22522/focus=6535.
