This will ensure that in verbose mode, the final state of the linear
system solvers is always printed. Previously this was the case only when
refresh rate was equal to 1.

Min. interations feature was fixed in the GMRES method.
Timers for explicit and semi-implicit timestepping were added.

Adding --fast-build optin for the build script to speed-up compilation.

Debugging GMRES solver.

Fixing the simple solver example.

TNL can be compiled without CXX11 support.

Adding explicit template instantiation.
Moving some _impl.h files into implementation dir.

Finishing new template interface for GMRES.

so far).

Creating template GMRES solver.

Adding new class tnlArrayManager for managing arrays - allocation/deallocation, load and save functions etc.
tnlVector is derived from tnlArrayManager.

There is gap of missing commits.