IPP: CV::dft
Added parallel version for DFT_ROWS
ipp: added LUT optimization
Added ippiComputeThreshold_Otsu to cv::threshold
Added setIppErrorStatus()
Changed epsilon for hog test, because hog detector is sensible to resize accuracy.
fixed compilation
Merge pull request #2674 from akarsakov:ocl_hog_fix_epsilon
Merge pull request #2654 from ElenaGvozdeva:ipp_DFT
Merge pull request #2653 from alalek:ipp_lut
IPP: cv::dft fixed
Merge pull request #2677 from ilya-lavrenov:ipp_compilation
Merge pull request #2667 from akarsakov:ipp_otsu
Merge pull request #2682 from ElenaGvozdeva:ippiDFT