library prefixes don't work with typenames

[floitschG]

As reported by Chris Bucket on the ML.
Given the file myLibrary.dart

library("wibble");

class MyClass {}

And the file myApp.dart

library("myApp");

import("myLibrary.dart", prefix:"myLib");

void main() {
  myLib.MyClass my_class = new myLib.MyClass(); // <== fails here
}

Fails because myLib.MyClass is apparently not recognized as type-name. Replacing it with "var" makes the program compile.

Error message:

file:/tmp/myApp.dart/myApp.dart:5: Unexpected token 'IDENTIFIER' (expected ';')
     4: void main() {
     5: myLib.MyClass my_Class = new myLib.MyClass();

Compilation failed with 1 problem.

[DartBot]

This comment was originally written by mmendez@google.com

---

Set owner to @jtmcdole.

[jtmcdole]

Added Accepted label.

[jtmcdole]

r1010
http://codereview.chromium.org/8428006/

---

Added Fixed label.