message: cmake: fix installation of python extra code
diff: @@ -232,8 +232,9 @@ if(NOT OPENCV_SKIP_PYTHON_LOADER)
  if(extra_py_files)
  list(SORT extra_py_files)
  foreach(f ${extra_py_files})
  + get_filename_component(__dir "${f}" DIRECTORY)
  configure_file("${__base}/${f}" "${__loader_path}/cv2/_extra_py_code/${f}" COPYONLY)
  - install(FILES "${__base}/${f}" DESTINATION "${OPENCV_PYTHON_INSTALL_PATH}/cv2/_extra_py_code/${f}" COMPONENT python)
  + install(FILES "${__base}/${f}" DESTINATION "${OPENCV_PYTHON_INSTALL_PATH}/cv2/_extra_py_code/${__dir}/" COMPONENT python)
  endforeach()
  else()
  message(WARNING "Module ${m} has no .py files in misc/python/package")
  