CopyDefaultStructParams
=======================

.. code-block:: none

  % Copy default parameter struct into a given user parameter struct
  %
  % USAGE:
  %    paramReal = CopyDefaultStructParams(paramDefault, param)
  %
  % INPUT
  %    paraDefault  :  Parameter struct with all default values.
  %    param        :  The input parameter  
  %
  % INPUT
  %    paramReal    :  Real parameter struct used in the following codes with a combination of paramDefault and param.
  %                    The default values in paramDefault are overriden by param
  %
  % Copyright (c) 2014, Jian Cheng (jian.cheng.1983@gmail.com)
  %