OMEdit displays enumerations as integers when debugging

[Per Östlund]

When using OMEdit to debug the compiler it will show enumeration literals as integers instead of the actual literals.

For example, try debugging this model:

model M
  connector C
    Real e;
    flow Real f;
  end C;

  C c1, c2;
equation
  connect(c1, c2);
end M;

Set a breakpoint in Config.languageStandardAtMost, on the second statement (Util/Config.mo:435). When the debugger reaches this breakpoint it will display the std variable as 7, instead of LanguageStandard.latest. It will also display the type of std as Integer instead of LanguageStandard.