Fix derivedNames test on Windows

On Windows, both outcomes are possible.
It might be related to JDK version on Windows.

Author: liufengyun

tests/generic-java-signatures/derivedNames.scala

@@ -4,10 +4,12 @@ object Test {
   def main(args: Array[String]): Unit = {
     val objectB = classOf[Foo[Any]].getClasses
     val returnType = objectB(1).getDeclaredMethod("m").getGenericReturnType.asInstanceOf[ParameterizedType]
+    val out1 = "Test$Foo.Test$Foo$A<Test.Test$Foo<T1>.B$>" // Windows and OSX
+    val out2 = "Test$Foo$A<Test$Foo<T1>$B$>"               // Linux and sometimes Windows
     if (scala.util.Properties.isWin)
-      assert(returnType.toString == "Test$Foo.Test$Foo$A<Test.Test$Foo<T1>.B$>")
+      assert(returnType.toString == out1 || returnType.toString == out2)
     else
-      assert(returnType.toString == "Test$Foo$A<Test$Foo<T1>$B$>")
+      assert(returnType.toString == out2)
   }
   class Foo[T1] {
     class A[T2]