CPPLapack Code

*add a few missing functions.
*update contribution functions for subspace iteration.

Files for small classes were organized.

quaternion class named dquater was added.
dquater is just a typedef of dcovector_small<4>.

typedef(s) for dcovec3, drovec3, dgemat3, and dsymat3 were added.

dcovector_small-drovector_small.hpp was added.

*modification of read functions
*organize small matrix files

*bug fix for write functions.
*remove CPPL::min and CPPL::max functions, and replace them to std::min or std::max.

*std::ofstream CPPL::ofs was added to control output format of write fnctions.

*small modifications

tiny modification of dssmatrix::zero.