Fixs: After scaling back to original image, some detected ROI will outside the original image ROI
removed VIBE implementation
Merge pull request #892 from jet47:removed-vibe
add OpticalFlowDual_TVL1_OCL function
Merge pull request #897 from bitwangyaoyao:2.4_TVL1
Merge pull request #853 from icylord:2.4
Merge remote-tracking branch 'origin/2.4'

Conflicts:
	3rdparty/libjasper/CMakeLists.txt
	cmake/OpenCVDetectOpenCL.cmake
	modules/calib3d/doc/camera_calibration_and_3d_reconstruction.rst
	modules/imgproc/src/floodfill.cpp
	modules/ocl/include/opencv2/ocl/ocl.hpp
	modules/ocl/src/arithm.cpp
	modules/ocl/src/haar.cpp
	modules/ocl/src/imgproc.cpp
	modules/ocl/src/initialization.cpp
	modules/ocl/src/matrix_operations.cpp
	modules/ocl/src/mcwutil.cpp
	modules/ocl/src/opencl/arithm_bitwise_and_mask.cl
	modules/ocl/src/opencl/arithm_bitwise_and_scalar_mask.cl
	modules/ocl/src/opencl/arithm_bitwise_binary_mask.cl
	modules/ocl/src/opencl/arithm_bitwise_binary_scalar.cl
	modules/ocl/src/opencl/arithm_bitwise_binary_scalar_mask.cl
	modules/ocl/src/opencl/arithm_bitwise_or.cl
	modules/ocl/src/opencl/arithm_bitwise_or_scalar.cl
	modules/ocl/src/opencl/arithm_bitwise_or_scalar_mask.cl
	modules/ocl/src/opencl/arithm_bitwise_xor.cl
	modules/ocl/src/opencl/arithm_bitwise_xor_mask.cl
	modules/ocl/src/opencl/arithm_bitwise_xor_scalar.cl
	modules/ocl/src/stereobm.cpp
	modules/ocl/test/precomp.hpp
	modules/python/src2/api
	modules/ts/src/ts_func.cpp
	samples/gpu/bgfg_segm.cpp
Merge pull request #907 from SpecLad:master
Merge pull request #887 from LeszekSwirski:fix-glinkedptrmutex
Merge pull request #797 from vhdirk:installheaders
Merge branch 'fix-qtwindow'
Merge branch 'fix-msvc64'