Blurb::
Specify number of prediction locations for model discrepancy

Description::
Following the calculation of the model discrepancy functions, \f$\delta_i\f$, 
and the corrected model \f$M_i + \delta_i\f$ may be calculated at new or 
"prediction" configurations. Using the \c num_prediction_configurations 
command, the user may specify the number of prediction configurations they 
wish to be computed. The new configuration locations will be 
spread uniformly in the configuration variable domain specified in the
\c variables block of the input file.

<b> Usage Tips </b>

If none of \c num_prediction_configs, \c prediction_configs, or
\c import_prediction_configs is specified, the number of prediction 
configurations is set to 10 for scalar responses. For field responses, the
corrected model will be output at the input values of the configuration 
variables. 
