Add example with Template inside parent

Author: nicolasstucki

tests/link/on-custom-lib/loadRefsInParents.classcheck

@@ -0,0 +1,5 @@
+A
+B
+EmptyClass
+Test
+Test$

tests/link/on-custom-lib/loadRefsInParents.scala

@@ -0,0 +1,9 @@
+object Test {
+  def main(args: Array[String]): Unit = {
+    new B
+  }
+}
+
+class A(x: Int)
+
+class B extends A({ class Foo extends EmptyClass; 1 })