navier_stokes → euler Relation

File in source/navier_stokes	Includes file in source/euler
description.h	hyperbolic_system.h
description.h	indicator.h
description.h	limiter.h
description.h	riemann_solver.h
initial_state_library.template.h	initial_state_library_euler.h
parabolic_solver_gmg_operators.h	hyperbolic_system.h