CPPLapack Code

All "#pragma omp parallel for" were removed.
I think functions with omp should be developed by each users for better performance.

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

*implicit cast constructors (constructor from dgbmatrix to dgematrix, from zhematrix to zgematrix, and so on) were deleted.
*to_dgematrix and to_zgematrix member functions were added.

The trunk cpplapack source code was added.