IOP Lens: modify_roi_in: use local buffers
IOP Lens: process: constify & others
IOP Lens: process (distort): use local buffers
IOP Lens: process (correct): use local buffers
IOP Lens: drop local buffers
IOP Lens: there is no CCI correction
IOP Lens: modify_roi_in: speedup (only for GCC-4.7+ (needs OpenMP 3.1))

AMD CodeXL: "timer" - old: 280; new: 77 (on export)
Merge pull request #597 from LebedevRI/iop-lens-update

IOP Lens update