ENH: Update ITK to include ObjectFactory Leak Fix.
ENH: Update to latest fixes in ITKv4.
COMP: ConstBoundaryCondition header was missing.

Previously the ConstBoundaryCondition header was implicitly included
from other headers.  It now must be explicitly specified if used.
ENH: Update SimpleITK to version that will be used during Utah Meeting demos.
DO NOT SUBMIT

This patch adds debuging information for tracking the
number of registered factories.