COMP: Add superbuild, fix issues with ITK4
COMP: changes for superbuild + ITK4
COMP: remove debug statements from cmake files
ENH: Add QT_QMAKE_EXECUTABLE.
COMP: Variable name mismatch prevented propogation of settings.
COMP: rebase on current creatis.insa-lyon.fr source
COMP: bump to VTK 6.1.0
COMP: VTK 6.1 changes