Write a function that dispatches the single argument x to multiple function handles (varargin) and concatenates vertically the respective outputs of these functions. All the functions are guaranteed to return the same numbers of outputs of the same size.

For example, given

x = [1 2 6
     2 7 5 
     3 5 4];
[bounds, positions] = dispatch(x, @min, @max)

bounds and position should be:

bounds = [1 2 4       %first output of min
          3 7 6]      %first output of max
positions = [1 1 3    %second output of min 
             3 2 1]   %second output of max