cell2vars: Transform cell to vars

% PURPOSE: Convert the cell's columns' to variables in matlab workspace
% -----------------------------------------------------------------------------
% SYNTAX:
% (1) cell2vars(cellvar)
% (2) cell2vars(cellvar, newvarname)
% -----------------------------------------------------------------------------
% OUTPUT:
% (1) each column of the cell is been transform to a variable in matlab
% workspace
% -----------------------------------------------------------------------
% INPUT:
% (1) cellvar: NxM --->a cell containing M columns. Each column include
% a head and its body.
% (2) newvarname: 1xM ---> M string as new head for the column.
% NB: no string can be include in the file.

% -----------------------------------------------------------------------
% LIBRARY:
% -----------------------------------------------------------------------
% SEE ALSO: vars2cell,
% -----------------------------------------------------------------------
% REFERENCE: assigni, eval
% -----------------------------------------------------------------------
% written by:
% Lin Renwen
% <linrenwen@gmail.com>

% Version 1.0 [2012-6-27 20:29:25]

%=============================================
% EXAMPLE:
% INPUT:
% > A = {'name','grade'; 1,56; 2,78; NaN,90};
% > cell2vars(A);
% > name
% name =
% 1
% 2
% NaN
%
% > grade
% grade =
% 56
% 78
% 90
% % END OF EXAMPLE
%=============================================