TUT: script cleanup, provide cleanCase0 for commonly used operation

...cations/utilities/surface/surfaceBooleanFeatures/Allwmake

bin/foamCleanTutorials

bin/foamRunTutorials

bin/tools/CleanFunctions

bin/tools/RunFunctions

src/mesh/Allwmake

tutorials/DNS/dnsFoam/boxTurb16/Allclean

tutorials/DNS/dnsFoam/boxTurb16/Allrun

tutorials/IO/fileHandler/Allclean

tutorials/IO/fileHandler/Allrun

tutorials/IO/fileHandler/Alltest

tutorials/basic/laplacianFoam/flange/Allclean

tutorials/basic/laplacianFoam/flange/Allrun

tutorials/basic/overLaplacianDyMFoam/heatTransfer/Allclean

tutorials/basic/overLaplacianDyMFoam/heatTransfer/Allrun

tutorials/basic/overLaplacianDyMFoam/heatTransfer/Allrun.pre

tutorials/basic/potentialFoam/cylinder/Allclean

tutorials/basic/potentialFoam/cylinder/Allrun

tutorials/basic/potentialFoam/pitzDaily/Allclean

tutorials/basic/potentialFoam/pitzDaily/Allrun