[fixes #2358] self-referential generics could cause endless loops in javac.

... unfortunately eclipse's val resolver is now very slightly worse in very exotic circumstances - spent about 4 hours trying to fix it, can't figure it out, let's move on.

test/transform/resource/after-ecj/ValWithSelfRefGenerics.java

@@ -0,0 +1,20 @@
+import lombok.val;
+public class ValWithSelfRefGenerics {
+  public ValWithSelfRefGenerics() {
+    super();
+  }
+  public void run(Thing<? extends Comparable<?>> thing, Thing<?> thing2, java.util.List<? extends Number> z) {
+    final @val java.util.List<? extends java.lang.Number> y = z;
+    final @val Thing<? extends java.lang.Comparable<?>> x = thing;
+    final @val Thing<?> w = thing2;
+    final @val java.lang.Object v = thing2.get();
+  }
+}
+class Thing<T extends Comparable<? super T>> {
+  Thing() {
+    super();
+  }
+  public T get() {
+    return null;
+  }
+}