Reinstantiate t920

Got deleted by accident. Version in run has object
renamed to prevent case clashes on MacOS. Version that
exhibits the clash is in pending/run.

Author: odersky

tests/run/t920.scala

@@ -0,0 +1,24 @@
+object Test {
+  trait A;
+  trait Foo0 { def foo : A; }
+  trait Baz extends Foo0;
+  trait B extends A {
+    def initialize = {
+      trait Foo extends Test.Foo0 {
+        def foo : B.this.type = B.this;
+      }
+      class baz extends Baz with Foo {
+        override def toString = "baz"
+      }
+      Console.println(new baz);
+    }
+  }
+  object bb extends B;
+  def main(args : Array[String]) : Unit = {
+    bb.initialize;
+  }
+}
+
+
+
+