BUG: Debugging DTIPrep returning non-zero status even when successful.

git-svn-id: https://www.nitrc.org/svn/dtiprep/trunk@251 3db2834d-1276-0410-a171-f2f48b2634cc
ENH: BRAINSTools to include fixed version of UKF.

UKF was writing vtk files with incorrect orientations
of the tensors this was fixed and pull requests generated.

ENH: Update BRAINSTools with BCD fixes.

git-svn-id: https://www.nitrc.org/svn/dtiprep/trunk@252 3db2834d-1276-0410-a171-f2f48b2634cc