This branch contains the most recent VTK updates

Since VTK now contains a class named vtkImageSlicer, the one in MRMLogics
has been renamed into vtkImageLinearReslicer since it was based on vtkImageReslicer
and specialied for the linear case.

Note also that VTK_LIBRARIES is now exposed by VTKConfig, it means this variable
will contain all the  library built within VTK after the VTK_USE_FILE
is included.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@16344 3bd1e089-480b-0410-8dfb-8563597acbee