CPPLapack Code

dssmatrix was renamed to dgsmatrix.
(zgsmatrix is under construction.)

modification to get rid of forbidden codes
*added nullify function for all smart-temporary classes
*put nullify() at the end of shallow_copy functions and shallow copy constructors
*modified destroy function to assign NULL to all pointers

Row and Col were added in dssmatrix for faster search of (i,j) component

add dssmatrix constructor from dgematrix

The trunk cpplapack source code was added.