BUG: Bump TubeTK to fix use of ArrayFire and installation command

Two major fixes in this bump:
TubeTK was missing specification of ArrayFire paths needed for
outside application to compile if ArrayFire was turned on when
ITK/TubeTK was compiled.

TubeTK attempted to install a file that is no longer included with
TubeTK

TubeTK can now build its applications. Requires building ITK with
TubeTK, building SlicerExecutionModel (which depends on ITK), and
then re-building ITK with it pointing to the build of
SlicerExecutionModel.   Ugly, but it works.

Modules/Remote/TubeTK.remote.cmake

@@ -49,5 +49,5 @@ itk_fetch_module(TubeTK
 "
   MODULE_COMPLIANCE_LEVEL 3
   GIT_REPOSITORY ${git_protocol}://github.com/InsightSoftwareConsortium/ITKTubeTK.git
-  GIT_TAG e3eb8677e802812c06a4a3fe19f39d3c6756cf59
+  GIT_TAG 707fa9f67d073739a14cd9b3d05b680271022240
   )