ADD: fpecial considerations making warps for use by FSL


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@5227 42a5c34f-2066-0410-bec5-ba365beb4995
FIX: wrong determinant sign


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@5228 42a5c34f-2066-0410-bec5-ba365beb4995