message: Add option to skip nested cmake structure on Windows
diff: @@ -122,7 +122,7 @@ endif()
  # Part 3/3: ${BIN_DIR}/win-install/OpenCVConfig.cmake -> For use within binary installers/packages
  # --------------------------------------------------------------------------------------------
  if(WIN32)
  - if(CMAKE_HOST_SYSTEM_NAME MATCHES Windows)
  + if(CMAKE_HOST_SYSTEM_NAME MATCHES Windows AND NOT OPENCV_SKIP_CMAKE_ROOT_CONFIG)
  ocv_gen_config("${CMAKE_BINARY_DIR}/win-install" "${OPENCV_LIB_INSTALL_PATH}" "OpenCVConfig.root-WIN32.cmake.in")
  else()
  ocv_gen_config("${CMAKE_BINARY_DIR}/win-install" "" "")
  