FIX: VTK binary format is always single-precision float

git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@5366 42a5c34f-2066-0410-bec5-ba365beb4995
CHG: prepare for CMTK 3.2.2

git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@5367 42a5c34f-2066-0410-bec5-ba365beb4995