Disable scalac internals tests

Author: felixmulder

tests/run/WeakHashSetTest.scala renamed to tests/disabled/scalac-dependent/WeakHashSetTest.scala

@@ -11,5 +11,6 @@ object Test {
   }
   def main (args: Array[String]): Unit = {
     Console.print((new B).y);
+    println()
   }
 }