ADD: return exitCode=3 if one or more volumes were not properly stacked


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@5202 42a5c34f-2066-0410-bec5-ba365beb4995
DOC


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@5203 42a5c34f-2066-0410-bec5-ba365beb4995
DOC


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@5204 42a5c34f-2066-0410-bec5-ba365beb4995