Extensible select and enumeration types

and their elements in schema Default_tolerance_arm taking into account BASED_ON types


 default_setting_select - EXTENSIBLE SELECT
          General_tolerances

 external_identification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          File

 general_tolerance_table_select - EXTENSIBLE SELECT
          General_tolerance_table

 identification_item - EXTENSIBLE SELECT

 measure_value - EXTENSIBLE SELECT
          any_number_value
          any_string_value
          length_measure
          plane_angle_measure