relax SVN archive

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r18760 | bugman | 2013-03-11 12:38:40 +0100 (Mon, 11 Mar 2013) | 7 lines

Converted many calls to generic_fns.mol_res_spin.generate_spin_id() to generate_spin_id_unique().

This will allow many future bugs to be avoided, as the spin ID string is most often used to retrieve
spin containers. By using the generate_spin_id_unique() function, the returning of spin containers
will always be correct.
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