Extensible select and enumeration types

and their elements in schema DEFAULT_TOLERANCE_XIM taking into account BASED_ON types


 default_setting_select - EXTENSIBLE SELECT
          general_tolerances

 external_identification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          document_file
          file

 general_tolerance_table_select - EXTENSIBLE SELECT
          general_tolerance_table

 identification_item - EXTENSIBLE SELECT
          document_file
          shape_representation

 versionable_item - EXTENSIBLE SELECT
          document_file
          shape_representation