Failure to look up base class in partial model

[Markus Dahl]

Model:

package ConstrainedbyBug
  package C
    package T
      partial model DAC
        replaceable ConstrainedbyBug.U.M.I.SF comp constrainedby ConstrainedbyBug.U.M.I.SF;
      end DAC;
    end T;

    model DAC
      extends ConstrainedbyBug.C.T.DAC(redeclare replaceable ConstrainedbyBug.U.M.ST comp);
    end DAC;
  end C;

  package U
    package M
      package I
        partial model S
        end S;

        partial model SF
          extends S;
        end SF;
      end I;

      model ST
      end ST;
    end M;
  end U;
end ConstrainedbyBug;

Validation fails with:

[1] 11:43:55 Translation Fel
[ConstrainedbyBug: 21:11-21:20]: Basklass S hittades inte i definitionsomr�de ConstrainedbyBug.C.DAC.

[2] 11:43:55 Translation Varning
[ConstrainedbyBug: 20:9-22:15]: Tvingar full instansiering av partiell klass SF under checkModel.

[Per Östlund]

Seems to have been fixed at some points, it now works fine in both the old and the new frontend.