MVE: Fixed image saving cast ambiguity
Merge branch 'master' into sfm
SFM: Protected OpenMP include if not available
Added Ceres Solver for bundle adjustment.
small fixes
fix matrix order and split camera int and ext
SFM: distort measurement instead of projection

Distortion model did not match the conventions in rest of the library
which made 'undistorted' views more distorted.
renaming fixed intrinsics option
Merge branch 'sfm-ceres' into sfm-video

Conflicts:
	libs/sfm/bundler_incremental.h