MR !33 : Port to the reinstall of clifton

new build_CUPyDO.sh

Config Clifton see MR !27 and !28

see MR !25 and !26

See MR !24

see MR !23 : Cleaner python 3 (old_div removed)

See MR !14 : upgrade scripts to Python 3

See MR !13 : upgrade to Python 3