CPPLapack Code

dug fix for dssmatrix

*halfway development of dssmatrix

*a few bug fix for copy constructor of smart temporary classes
*some modification of dssmatrix (not yet included in cpplapack.h)

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

added dssmatrix::stretch function

small modification of dssmatrix functions

*bug fix for del and fdel of dssmatrix
*modification of double-dss and dss-double operators not to access upper triangle part

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

add "void unique()" for dssmatrix
a few tiny modifitation on dssmatrix