ENH: DTIPrep can be build as a Clicer4 extension

git-svn-id: https://www.nitrc.org/svn/dtiprep/trunk@215 3db2834d-1276-0410-a171-f2f48b2634cc
BUG: make ExperimentalUpload was not working

git-svn-id: https://www.nitrc.org/svn/dtiprep/trunk@216 3db2834d-1276-0410-a171-f2f48b2634cc
BUG: Mulitple declaration of the option ${LOCAL_PROJECT}_USE_QT were found in the project. This was simplified and better integrated with the extension building system.
ENH: External_DTIReg.cmake was update to download a more recent revision of DTIReg



git-svn-id: https://www.nitrc.org/svn/dtiprep/trunk@217 3db2834d-1276-0410-a171-f2f48b2634cc
ENH: Syncronized with ITK and Slicer macros.
ENH: Update BRAINSTools for new DWIConvert.