Reviewed and updated the PCE and SC descriptions in the Ref Manual: > Added docs for new capabilities for regression with ratio_order and    multivariate interpolation with derivatives. > Extended variable support tables to include piecewise bases and clarified   the \c all_variables dependence within these tables.
Reviewed and updated the PCE and SC descriptions in the Ref Manual:
> Added docs for new capabilities for regression with ratio_order and 
  multivariate interpolation with derivatives.
> Extended variable support tables to include piecewise bases and clarified
  the \c all_variables dependence within these tables.


git-svn-id: c6750f7dd89925e309f580f56430152d063ff36c@820 aa0779c3-6ec2-4b84-a212-a405c134cd8d

pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA