Support overriding factory methods that come from generic superclasses/interfaces.

[svas57]

When a factory method is inherited from a generic class/interface, generated auto factory will use type parameter name (e.g. T) rather than the substituted type. For example, given this code:

class MyClass {

  @AutoFactory(implementing = MyFactory.class)
  MyClass(@Provided String s, Integer i) {}

  interface MyFactory
      extends GenericFactory<MyClass, Integer> {}

  interface GenericFactory<T,S> {
    T make(S arg);
  }
}

Generated factory will contain this method

    public MyClass make(S arg) {
      return create(arg);
    }

[gk5885]

Yeah, that's definitely a bug. Good catch.