Merge pull request scala#4110 from lrytz/t8960-delambdafy

Make t8960 pass under delambdafy:method

Author: retronym

test/files/run/t8960.scala

@@ -1,6 +1,12 @@
 object Test extends App {
   def test(o: AnyRef, sp: Boolean = false) = {
-    if (sp) assert(o.getClass.getSuperclass.getName contains "$sp")
+    val isSpecialized      = o.getClass.getSuperclass.getName contains "$sp"
+    val isDelambdafyMethod = o.getClass.getName contains "$lambda$"
+    assert(
+      // delambdafy:method doesn't currently emit specialized anonymous function classes
+      if (sp) (isSpecialized || isDelambdafyMethod) else !isSpecialized,
+      o.getClass.getName)
+
     val Some(f) = o.getClass.getDeclaredFields.find(_.getName == "serialVersionUID")
     assert(f.getLong(null) == 0l)
   }