Fix compilation order of tests

Author: TheElectronWill

tests/neg/java-wrong-bounds/D.scala renamed to tests/neg/java-wrong-bounds/D_1.scala

@@ -1,6 +1,6 @@
-public class J extends D<String> { // error
+public class J_2 extends D<String> { // error
 
-  public J() {
+  public J_2() {
     super(null);
   }