Rename BKE_appdir_folder_id_version to BKE_appdir_resource_path_id_with_version because BKE_appdir_folder_id and BKE_appdir_folder_id_version didn't accept compatible arguments. Also add notes to GHOST_getSystemDir & GHOST_getUserDir that BKE_appdir_resource_path_id(..) should be used instead (in most cases).