tutorials: Renamed .org -> .orig

See http://www.openfoam.org/mantisbt/view.php?id=2076
  - .org is the file extension for emacs org-mode as well
  - .orig is more to the point (.org isn't always recognized as "original")
  - .original is too long, although more consistent with the convention
    of source code file naming

Update script contributed by Bruno Santos

tutorials/compressible/rhoCentralFoam/shockTube/Allclean

@@ -5,7 +5,7 @@ cd ${0%/*} || exit 1    # Run from this directory
 . $WM_PROJECT_DIR/bin/tools/CleanFunctions
 
 rm -rf 0
-cp -r 0.org 0
+cp -r 0.orig 0
 cleanCase
 cleanSamples
 

tutorials/compressible/rhoPimpleDyMFoam/annularThermalMixer/Allrun

@@ -17,7 +17,7 @@ runApplication createPatch -overwrite
 runApplication createBaffles -overwrite
 runApplication mergeOrSplitBaffles -split -overwrite
 
-cp -r 0.org 0
+cp -r 0.orig 0
 
 runApplication $(getApplication)
 

tutorials/compressible/sonicFoam/laminar/shockTube/Allclean

@@ -6,7 +6,7 @@ cd ${0%/*} || exit 1    # Run from this directory
 
 cleanCase
 rm -rf 0
-cp -r 0.org 0
+cp -r 0.orig 0
 cleanSamples
 
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