New versions of ITK
Added ITK v4.6rc02
Added missing options
Practical scripts to compile different versions of itk
Improved script for more compilations
Use RelWithDebInfo for valgrind
Make sure FFTW is compiled
Set the number of threads
Merge branch 'dashboard' of github.com:SimonRit/RTK into dashboard
Added itk 460 and 430
Moved itk dir