Bugfix: Memory leak in deletion of er_stack nodes of ERFilter.
added perftest for moments
SSE2 optimization of cv::preCornerDetect
ocl: don't use OpenCL CPU device in default setup
Merge pull request #2830 from mlyashko:moments
Merge pull request #2913 from ilya-lavrenov:sse2_precornerdetect
Merge pull request #2923 from alalek:ocl_default_device_ignore_cpu
Merge pull request #2856 from sanchom:master