COMP: rename GetJacobian() to make transform ITKv4 compliant
Created by: domibel
This patch is necessary to compile Slicer with a system ITKv4 library.
I don't think that the patch is backwards compatible to ITKv3, so please handle with care.
For more info see the ITKv4 migration guide. http://itk.org/migrationv4/index.php?action=artikel&cat=3&id=110&artlang=en