Fix and first running test with the Fortran solution.

src/Fortran/CMakeLists.txt

src/Fortran/gdgges.f

src/Fortran/gdtgex2.f

src/Fortran/gdtgexc.f

src/Fortran/gdtgsen.f

src/PreviewControl/OptimalControllerSolver.cpp

tests/CMakeLists.txt