separed solvers, mended errors in N-S right hand sides

src/Examples/flows/CMakeLists.txt

src/Examples/flows/CMakeLists_separate.txt

src/Examples/flows/CMakeLists_together.txt

...rs/Navier-Stokes/Steger-Warming/StegerWarmingContinuity.h

...rators/Navier-Stokes/Steger-Warming/StegerWarmingEnergy.h

...ors/Navier-Stokes/Steger-Warming/StegerWarmingMomentumZ.h

...ightHandSide/NavierStokesMomentumXOperatorRightHandSide.h

...ightHandSide/NavierStokesMomentumYOperatorRightHandSide.h

...ightHandSide/NavierStokesMomentumZOperatorRightHandSide.h

src/Examples/flows/flowsRhs.h

src/Examples/flows/navierStokesAUSMPlus.cpp

src/Examples/flows/navierStokesAUSMPlus.cu

src/Examples/flows/navierStokesAUSMPlus.h

src/Examples/flows/navierStokesLaxFriedrichs.cpp

src/Examples/flows/navierStokesLaxFriedrichs.cu

src/Examples/flows/navierStokesLaxFriedrichs.h

src/Examples/flows/navierStokesStegerWarming.cpp

src/Examples/flows/navierStokesStegerWarming.cu

src/Examples/flows/navierStokesStegerWarming.h

src/Examples/flows/navierStokesVanLeer.cpp