Test build on win/vs2017-2019. Update findTBB to find oneTBB. Update tbb threads control (tbb::global_control) and loop (tbb::parallel_for_each) and mutex (std::mutex). Remove warnings.

Add interface for linear sovlers. Add macros definition at global level. Adapt modules to test the different linear solvers.

Various fixes for msys2 (windows) build. Rm mpi4py mandatory dependency. Rm catch by value and uninit build warnings for gcc9. Updt onera mesh size for greater robustness.

Numerical jacobian only used if flow is locally supersonic. Otherwise analytical jacobian is assembled. Speedup of 3-4 for Jacobian assembly!