BUG: Fixed a bug in GenericTransformImage
BUG:  Connections to Segmentation were incorrect

Needed to propogate the correct images to be used for segmentation by BRIANSCut.
ENH: Make segmentation connection.
ENH: Add feature for using ROIAuto for registration masking

antsRegistration usually does not have masking for registration.
By adding ROIAuto to the mix, better registration is possible.