[A/U/MP] Correct ghost element information.
The ghost node flag was set improperly. As a consequence, the RemoveGhostData
tool was not able to build a correct unstructured mesh (vtu) from a parallel unstructured grid (pvtu).
The ghost node flag was set improperly. As a consequence, the RemoveGhostData
tool was not able to build a correct unstructured mesh (vtu) from a parallel unstructured grid (pvtu).