message: moving external extensions
diff: @@ -807,5 +807,5 @@ endif()
  # build out-of-tree extensions on demand
  if(NOT "${EXTERNAL_EXTENSION_DIRECTORY}" STREQUAL "")
  - add_subdirectory(${EXTERNAL_EXTENSION_DIRECTORY} external_extension_build)
  + add_subdirectory(${EXTERNAL_EXTENSION_DIRECTORY} extension/external)
  endif()
  \ No newline at end of file
  