SurfaceFitView: Add a view to fit a 2D surface
fancy_correlate: Add iterative mapping stereo
fancy_correlate: Tune Surface fitting.

The polynomial now fits to a large square than what it is supposed to
be rendering.
disable pyramid correlation, performs worse
add random debugging tools
PatchMatch2: Drop evaluation in off angles, speed up
PatchMatch2: Optimize correlate
Implement a pyramidal mapping approach
Pretty successful NCC configuration
Checkin forgotten NCC code
Add back in a parallel version of TVMin

However this shows that we can't split this by tiles.