Saturation properties record must be redeclared in WaterIF97_base package

[wischhusen]

In order to allow a record constructor for SaturationProperties like in the example below it needs to be redeclared in the medium package Water.WaterIF97_base first.
Modelica.Units.SI.SpecificEnthalpy h_dew=Medium.dewEnthalpy(Medium.SaturationProperties(Tsat=Medium.saturationTemperature(state.p), psat=Medium.pressure(state)));

See R134a.R134a_ph for example.

redeclare record extends SaturationProperties
end SaturationProperties;