Generalize type references

[oyvindberg]

So far we've been pretty pedantic in the handling of things like re-exported types.

declare module "libfoo/impl/foo" {
  export class Foo {}
}
declare module "libfoo" {
  export import {Foo} from ''libfoo/impl/foo";
  export class Bar {
    constructor(foo: Foo) {}
  }
}

In most cases Bar has pointed to libfoo.Foo so far, while the intention was really something compatible with libfoo/impl/foo.Foo

In the name of pragmatism, assert that if a class has a parent with the same name and type parameters, accept that in the place of the child class.

[oyvindberg]

effect so far ScalablyTyped/Distribution@ff1c1ce