Replace OriginalSubsfcNodeIDs with bulk_node_ids.

pre/BCs/inhomogeneous-mass-flux/prepare-inhomogeneous-mass-flux-BC.py

@@ -31,7 +31,7 @@ def do_enumerate_points():
     # point_ids = vtk.vtkIdTypeArray()  ## TODO why does that not work?
     # point_ids = vtk.vtkLongArray()
     point_ids = vtk.vtkUnsignedLongArray()
-    point_ids.SetName("OriginalSubsurfaceNodeIDs")
+    point_ids.SetName("bulk_node_ids")
     point_ids.SetNumberOfComponents(1)
     N = data.GetPoints().GetNumberOfPoints()
     point_ids.SetNumberOfTuples(N)

pre/BCs/map-boundary-mesh-to-bulk-mesh/map-boundary-to-bulk.py

@@ -32,7 +32,7 @@ def do_mapping():
     # point_ids = vtk.vtkIdTypeArray()  ## TODO why does that not work?
     # point_ids = vtk.vtkLongArray()
     point_ids = vtk.vtkUnsignedLongArray()
-    point_ids.SetName("OriginalSubsurfaceNodeIDs")
+    point_ids.SetName("bulk_node_ids")
     point_ids.SetNumberOfComponents(1)
     point_ids.SetNumberOfTuples(N_boundary)