BUG: Fixed cleanup posteriors for new file names

The new atlas has a different set of prior names.  Also verified
that each file named has an explicit action, and no default fall though
actions are allowed.
BUG: Fixed for new atlas file names.
BUG: Fixed bug in nipype for ants regisration.
BUG: missing increment of channel index for diagnostic printing.
ENH: Added keyword of 'all' for selecting all subjects.