test order of enumerated values

check also enumeration values not only the enumeration literal names (see test Pos_050202_name_conversion_rules_020)

e.g. the element-definition

  <element name="MyType">

    <simpleType>

      <restriction base="string">

        <enumeration value="red"/>

        <enumeration value="红色red"/>

      <enumeration value="blue"/>

      <enumeration value="藍色blue"/>

      </restriction>

    </simpleType>  

  </element>

should generate the enumeration type ( blue(0)="blue", red(1)="red", red_1(2)="红色red", blue_1(3)="藍色blue" )