message: cmake(python): handle PYTHON3_LIMITED_API
  python-3.x => python-3
  config-3.x.py => config-3.py
diff: @@ -164,7 +164,12 @@ if(OPENCV_SKIP_PYTHON_LOADER)
  endif()
  else()
  ocv_assert(DEFINED OPENCV_PYTHON_INSTALL_PATH)
  - set(__python_binary_install_path "${OPENCV_PYTHON_INSTALL_PATH}/${__python_loader_subdir}python-${${PYTHON}_VERSION_MAJOR}.${${PYTHON}_VERSION_MINOR}")
  + if(${PYTHON}_LIMITED_API)
  + set(__python_binary_subdir "python-${${PYTHON}_VERSION_MAJOR}")
  + else()
  + set(__python_binary_subdir "python-${${PYTHON}_VERSION_MAJOR}.${${PYTHON}_VERSION_MINOR}")
  + endif()
  + set(__python_binary_install_path "${OPENCV_PYTHON_INSTALL_PATH}/${__python_loader_subdir}${__python_binary_subdir}")
  endif()
  install(TARGETS ${the_module}
  @@ -192,7 +197,7 @@ if(NOT OPENCV_SKIP_PYTHON_LOADER)
  set(CMAKE_PYTHON_EXTENSION_INSTALL_PATH_BASE "LOADER_DIR")
  endif()
  - if(DEFINED ${PYTHON}_VERSION_MINOR)
  + if(DEFINED ${PYTHON}_VERSION_MINOR AND NOT ${PYTHON}_LIMITED_API)
  set(__target_config "config-${${PYTHON}_VERSION_MAJOR}.${${PYTHON}_VERSION_MINOR}.py")
  else()
  set(__target_config "config-${${PYTHON}_VERSION_MAJOR}.py")
  