Signed-off-by: Li Peng <peng.li@intel.com>

It fixes tensorflow ocl testcase of MobileNetSSD and Inception_v2_SSD
Signed-off-by: Li Peng <peng.li@intel.com>

Existed includes sequence:
- utility.hpp -> core.hpp -> operations.hpp

cuda_fast : multi stream safety (#10906)

* CUDA_Features2D/FAST Asynchronous test

* cuda_fast : multi stream safety

* Use parallel_for instead of OpenMP

* make tmpRow proper size before copyTo to avoid reallocated tmpCol

* do the transposition without creating temporary array; replace TAB with spaces.

* revert the previous commit

> cap_ffmpeg_impl.hpp:1710:11: error: 'uchar' does not name a type

about BYPRODUCTS bin/opencv-340.jar

include relu6 ocl kernel and layer fusion support
Signed-off-by: Li Peng <peng.li@intel.com>

* Use only absolute prior boxes explicit sizes. Remove scales attributes.

* Simplified PriorBox layer forward pass

For using 'OpenCV for Android SDK' with Android Studio projects.

To allow runtime disabling of AVX512-SKX via 'OPENCV_CPU_DISABLE' parameter

* Samples: reworked bgfg_bgsegm

* fixup! Samples: reworked bgfg_bgsegm