[Cin] Lcms2 integration

So I played around lcms2 2.13.1 integration in cingg build system for ffmpeg and it appear to work - at least build works and I can see iccgen/iccdetect filters ... Note, lcms2 tarball not included due to size Note that ffmpeg also demand lcms2 >= 2.13 We also can try and get in ffmpeg.git patches hopefully enabling automatic icc profile support at least for input images ...