Support default arguments for inherited components

[Martin Sjölund]

loadString("
function g
  input Real r := 1.5;
  output Real o := r;
protected
  Real y; // Should not be possible to change
end g;
function f
  extends g;
end f;
");
f(r=2.5);
f();
f(x=5.0);
f(y=9.0);
f(4.5);
f(4.5,"abc");

[Adrian Pop]

also add in the test:

f(someNotReallyThereArgument = 5, someOtherStuff = "blah"); // check for not existing args
f(5, "blah"); // check for wrong args.