stereo_mpi.in: Minor usage fix
Add Ben's sparse disparity Python code
sparse_disp: add --processes option
WIP: Skeletoning out AffineEpipolar
WIP: Fill in the algorithms for affineepipolar
WIP
WIP: Convert stereo_tri to how I want the API to work like
WIP: StereoSession drop LUT
WIP: Move some StereoSessions over to new API style
WIP: Attempt some more to finish the API change
Sessions: Add TestInstantiation

Makes sure that at least the sessions compile and define the types we
need. This is to make the developers life easier so they can look at
errors here instead of errors *20 inside the Tools directory.
stereo: Remove templates in calls to stereo_triangulate

Easier to read and less to type.
stereo_tri: Remove more unnecessary code