FIX: provide restore0Dir function to fix issue #159

- makes it easier to ensure the correct behaviour, consistently

tutorials/lagrangian/reactingParcelFoam/verticalChannel/Allrun

@@ -7,12 +7,12 @@ cd ${0%/*} || exit 1    # Run from this directory
 # create mesh
 runApplication blockMesh
 
-cp -r 0.org 0
+restore0Dir
 
 # initialise with potentialFoam solution
 runApplication potentialFoam
 
-rm -f 0/phi
+\rm -f 0/phi
 
 # run the solver
 runApplication `getApplication`