Pass ApplyRadialDistortionCameraIntrinsics input arguments by reference
Pass ApplyRadialDistortionCameraIntrinsics input arguments by reference

This shall save some CPU time on calling copy constructor and give
some boost of bundle adjuster (where jet could take some time to
be passed by value).

Nazg-Gul/libmv,Nazg-Gul/libmv,Nazg-Gul/libmv,Nazg-Gul/libmv,Nazg-Gul/libmv