ENH: Add New path for processing low res DWI
ENH: Updated to ITKv4.4.0 + MGHIO
STYLE: Useless ITK deprecated define removed.

The ITK_EXPORT define was set to nothing and had no
known remaining purpose.  It was removed to make the
over all code easier to understand.  There was,
understandably, a bit of confusion about the
need for this being pervasive in the code.

It is currently backwards compatible to have
this in code, but at some future point it will
be removed.
COMP: Suppress more superbuild warnings.
BUG: Landmark compare was unstable.

The LandmarkCompare program was comparing strings instead of landmarks.
That was very unstable and had no way to test for tolerance.  It also
used much custom code rather than the landmark readers/writers.

This was completely re-written to to reduce code, provide more complete
code coverage, and to add a tolerance level to allow small floating point
deviations in the landmark locations.
ENH: Update OpenCV to latest version.
ENH: Update ANTS, ITK, SlicerExecutionModel.
STYLE: Minor style issues in BCD.
ENH: Added build items for ukftractography.
COMP: BRAINSTalairach CMake config issues
Merge pull request #39 from Chaircrusher/BRAINSTalairachConfigProblems

COMP: BRAINSTalairach CMake config issues