- bgfg_segm
- peopledetect
- opencv_version
- dnn/colorization
- tapi/opencl_custom_kernel
- tapi/dense_optical_flow (renamed tvl1_optical_flow)

  * avoid aggressive optimization on Visual Studio 2012 Update 5
  * add code branch to avoid unattended optimization (keep the old code)

* SSE2 : use _mm_cvtpd_epi32 when converting from CV_64F to CV_32S

* No need to define a new universal intrinsic

* clean npr functions of useless initializations (speed-up)

* photo: remove unnecessary code

To investigate sporadic failures of Features2d_FLANN_Auto.regression test.

This commit readd ${VA_LIBRARIES} ${VA_INTEL_LIBRARIES}
that was missed in commit 2200e13c

    diff --git a/samples/va_intel/CMakeLists.txt b/samples/va_intel/CMakeLists.txt
    -    ocv_target_link_libraries(${the_target} ${OPENCV_LINKER_LIBS} ${OPENCV_VA_INTEL_SAMPLES_REQUIRED_DEPS} ${VA_LIBRARIES} ${VA_INTEL_LIBRARIES})
    +  ocv_target_link_libraries(${tgt} ${OPENCV_LINKER_LIBS} ${OPENCV_VA_INTEL_SAMPLES_REQUIRED_DEPS})

- missing 'module'
- fixed '\r\n' EOL handling (blocked by '$' regex)

Signed-off-by: NWu, Zhiwen <zhiwen.wu@intel.com>
Signed-off-by: NLi Peng <peng.li@intel.com>

  * loosen some test threshold mainly for integer types
  * use relative error for floating points result
  * avoid division by zero by following the comment
  * fix the indentation

OpenCV 3.4.1