COMP: Prevent ITK_USE_64BITS_IDS with Wrapping on Windows.

GCCXML generates interfaces where itk::SizeValueType becomes
unsigned long.  This causes problems on Windows where unsigned long
is only 32 bits.

Change-Id: I4239b6c6c648c01d9d7c8a95725e14bd2314fc74
Merge topic 'VSWrap'

07dfd5b COMP: Prevent ITK_USE_64BITS_IDS with Wrapping on Windows.