WinRT core compatibility fixes

Update system.cpp

Update system.cpp

Update ocl.cpp

Update matching.cpp

Update ocl.cpp

Update matching.cpp
icv: android x86 build
exposed OpenCL-control functions to python
exposed TVL1 optical flow to python
IPP: fixed ipp_matchTemplate
Merge pull request #2756 from ElenaGvozdeva:ippi_matchTemplate
Merge pull request #2685 from znah:ocl_control_py
Merge pull request #2698 from GregoryMorse:patch-2
Merge pull request #2741 from alalek:icv_android