Extensible select and enumeration types

and their elements in schema CONDITIONS_SCHEMA taking into account BASED_ON types


 cell_shape - EXTENSIBLE SELECT
          cell_shape_0d
          cell_shape_1d
          cell_shape_2d
          cell_shape_3d

 cell_shape_0d - EXTENSIBLE ENUMERATION
          single

 cell_shape_1d - EXTENSIBLE ENUMERATION
          line

 cell_shape_2d - EXTENSIBLE ENUMERATION
          quadrilateral
          triangle

 cell_shape_3d - EXTENSIBLE ENUMERATION
          hexahedron
          pyramid
          tetrahedron
          wedge

 choose_geometry_location - EXTENSIBLE SELECT
          externally_defined_item
          shape_representation

 mbna_bc_type - EXTENSIBLE SELECT
          mbna_bc_type_compound
          mbna_bc_type_simple

 mbna_bc_type_compound - EXTENSIBLE ENUMERATION
          application_defined
          bc_farfield
          bc_inflow
          bc_outflow
          unspecified

 mbna_bc_type_simple - EXTENSIBLE ENUMERATION
          application_defined
          bc_axissymmetric_wedge
          bc_degenerate_line
          bc_degenerate_point
          bc_dirichlet
          bc_extrapolate
          bc_general
          bc_inflow_subsonic
          bc_inflow_supersonic
          bc_neumann
          bc_outflow_subsonic
          bc_outflow_supersonic
          bc_symmetry_plane
          bc_symmetry_polar
          bc_tunnel_inflow
          bc_tunnel_outflow
          bc_wall
          bc_wall_inviscid
          bc_wall_viscous
          bc_wall_viscous_heat_flux
          bc_wall_viscous_isothermal
          unspecified

 mesh_location - EXTENSIBLE ENUMERATION
          application_defined
          cell_centre
          edge_centre
          face_centre
          iface_centre
          jface_centre
          kface_centre
          unspecified
          vertices

 riemann_1d_data_name - EXTENSIBLE ENUMERATION
          characteristic_acoustic_minus
          characteristic_acoustic_plus
          characteristic_entropy
          characteristic_vorticity1
          characteristic_vorticity2
          riemann_invariant_minus
          riemann_invariant_plus