fixing accum_dist and operator() mismatching for HellingerDistance and KL_Divergence
Implemented Kullback-Leibler divergence
optimized cv::setIdentity
increased number of rows per work-item
Optimization of cv::pyrDown for 8UC1.
optimized INTER_LINEAR mode
Use fma only for Intel devices
SSE2 optimization of magnitude calculation
Change global buffer to local
minor optimization of cv::LUT
sse2 optimization of inv_sqrt_64f
Change groups count for Intel
optimization of cv::minMaxLoc - used min/max
Added call to clone() to avoid unexpected change to external data.
- Fix both stitching_detailed.cpp sample and cv::Stitcher.
SSE2 optimization of cv::inRange
SSE2 optimization of cv::patchNaNs
imgproc: fix compiler error for gcc 4.8

this bug was introduced in a73809e6.
Merge pull request #2944 from bkueng:fix_compiler_error
Merge pull request #2941 from ilya-lavrenov:sse_inrange
Merge pull request #2937 from ilya-lavrenov:sse_patch_nans