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.

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.