Merged revisions 20743-20744 via svnmerge from 
svn+ssh://bugman@svn.gna.org/svn/relax/trunk

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  r20743 | bugman | 2013-09-02 14:45:59 +0200 (Mon, 02 Sep 2013) | 5 lines
  
  Modified the create_mc_data() method to partly fix bug #21079 (https://gna.org/bugs/?21079).
  
  Some spins with local tm models remain selected despite not containing any data.  These are handled
  explicitly.  Instead of a RelaxNoModelError being raised, the method returns None to indicate that
  something went wrong.
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  r20744 | bugman | 2013-09-02 14:46:00 +0200 (Mon, 02 Sep 2013) | 5 lines
  
  Final fix for bug #21079 (https://gna.org/bugs/?21079).
  
  This is the failure of the dauvergne_protocol auto-analysis when the "local tm" global model is
  selected.  The Monte Carlo create_data() method not skips data from the base_data_loop() if the
  create_mc_data() method returns None.
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