[fixes #1918] toString now supports a configkey to tell it how to deal with super.

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

@@ -0,0 +1,16 @@
+@lombok.ToString class ToStringAutoSuperWithNoParent {
+  ToStringAutoSuperWithNoParent() {
+    super();
+  }
+  public @java.lang.Override @java.lang.SuppressWarnings("all") java.lang.String toString() {
+    return "ToStringAutoSuperWithNoParent()";
+  }
+}
+@lombok.ToString class ToStringAutoSuperWithParent extends ToStringAutoSuperWithNoParent {
+  ToStringAutoSuperWithParent() {
+    super();
+  }
+  public @java.lang.Override @java.lang.SuppressWarnings("all") java.lang.String toString() {
+    return (("ToStringAutoSuperWithParent(super=" + super.toString()) + ")");
+  }
+}