ENH: Refactor and clean user interface
ENH: Add missing test labelmap and update test script
BUG: Update teem's url for superbuild
COMP: Fixed up SuperBuild for UKFTractography standalone
ENH: Add baseline test vtk generated from Mac
COMP: Switch to NamicExternalProjects SuperBuild
COMP: fix capitalization in SuperBuild
DOC: update build instructions
BUG: if origin isn't set in nrrd reader, set it to a reasonable default
COMP: Check for UKFTractography_BUILD_SLICER_EXTENSION

According to JC, this is set if the Slicer/Extensions/CMake
build method is used to build an extension, so check for
that to suppress things only needed in standalone superbuild.

COMP: dont override install/output paths when building Slicer extension

Actually suppress doing this unless it's a standalone
SuperBuild.

COMP: git rid of abolute paths for install targests

I'm not sure why these are in the build files copied
from NamicExternalProjects -- I imagine they should
not be there in any environment.
ENH: use the Eigen template library for linear algebra operations
COMP: move member variables that are really local temps out of class & into method