COMP: Bump ITK version to 4.5rc02

Hat tip to JC for the ITK API fix.  Bumps the ITK
version to that used by Slicer.

Change-Id: Id478f275e97195e27095e6556fcc0812fabbf584
Merge pull request #168 from chrismullins/update-itk-version-with-slicer

COMP: Bump ITK version to 4.5rc02