added timelapse
Optimize ocl version of warp_affine
Added an option to traincascade program to select the maximum number of threads to use during training
Added accuracy and performance tests for DFT all modes.
Merge pull request #3000 from akarsakov:ocl_dft_new_tests
Add NEON intrinsics to core/src/arithm.cpp
Merge pull request #2993 from vbystricky:oclopt_warp_affine
Merge pull request #1292 from adrians:neon-pull
Merge pull request #2720 from pglotov:master
Merge pull request #2999 from jpuigcerver:traincascade_choose_threads