fix bug14192: ProbeFilter can't probe an Image with more than 2^31 cells

This bug affects how a point/cell id is computed from ijk structured
coordinates. The Ijk coordinates are passed as ints, so the computation
is performed using int arithmetics which overflows. The solution is to
perform the computation using vtkIdType arithmetic.

Change-Id: If3778b548c8269b759f820f66f9e57a6d9659abe
Merge topic 'StructuredData-GetLinearIndex' into master

a9db3e2e fix bug14192: ProbeFilter can't probe an Image with more than 2^31 cells