relax SVN archive

svn+ssh://bugman@.../svn/relax/trunk

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r19961 | bugman | 2013-06-07 23:57:07 +0200 (Fri, 07 Jun 2013) | 6 lines

Fixes for the value.write user function for simple parameter values of None.

This is a recently introduced bug which causes a complete failure of the user function is the
parameter for any spin is None.
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