Remove using ITK when wrapping.

When compiled on windows there a is command line length limit 8192. If
SimpleITK is build against an uninstalled ITK, then this limit will be
exceeded due to too many include paths. The Lua main has some minor
dependencies on itk headers; these have been removed.

This issue was reported by Andras Lasso from the Slicer community:
http://www.na-mic.org/Bug/view.php?id=3157

Change-Id: Ib0a8184a25ea92df05cd651608263e0ffc4f84d5
Merge topic 'SIMPLEITK-408_ReduceIncludePath' into next

481e45e Remove using ITK when wrapping.