BUG: support new Philips scanner data.

Also include itkDCMTKFIleReader from ITK;
found a bug in thatclass in ITK,
so fix the bug and include the class here,
until the bug is merged in ITK proper.
COMP: Synchronize Superbuild with NAMICExternalProjects
COMP: fix some CMake 3 problems
COMP: make sure SlicerExecutionModel_DIR gets passed to BRAINSTOols
COMP: fix compile failures due to BRAINSTools not finding VTK
COMP: rearrange CMakeLists.txt to accomodate CMake 3
Merge pull request #83 from Chaircrusher/ArtichokeSuperbuild

Artichoke superbuild for BRAINSTools