streamFunction: Normalise stream-function by the 2D mesh thickness
Resolves bug-report: http://www.openfoam.org/mantisbt/view.php?id=976
tutorials: Update Allrun to create the 0 directory as required
Fixes for tetPolyBoundaryMesh to work with 2.2.x
Fixes for tetPolyBoundaryMesh to work with 2.2.x