revert !99 (update atlas/v27r2_head to gaudi/master on 11/11/2016)
further testing needed in mig for const GaudiHandle enforcement, and need to apply patch.
revert head of atlas/v27r2_head back to tag v27r2_head.001, ie remove massive update for Property modernization merge plus everything else up to 11/11/2016
see !99 (merged)