[fixes #2838] Handle anonymous classes properly

Generated qualified names (e.g. Outer.Inner) now stop at anonymous
classes instead of adding an empty part. All handlers that add static
fields/methods/types now add error messages instead of generating
invalid code.

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

@@ -0,0 +1,34 @@
+import lombok.Getter;
+public class GetterLazyInAnonymousClass {
+  Object annonymous = new Object() {
+    class Inner {
+      private final @Getter(lazy = true) java.util.concurrent.atomic.AtomicReference<java.lang.Object> string = new java.util.concurrent.atomic.AtomicReference<java.lang.Object>();
+      Inner() {
+        super();
+      }
+      public @java.lang.SuppressWarnings({"all", "unchecked"}) String getString() {
+        java.lang.Object value = this.string.get();
+        if ((value == null))
+            {
+              synchronized (this.string)
+                {
+                  value = this.string.get();
+                  if ((value == null))
+                      {
+                        final String actualValue = "test";
+                        value = ((actualValue == null) ? this.string : actualValue);
+                        this.string.set(value);
+                      }
+                }
+            }
+        return (String) ((value == this.string) ? null : value);
+      }
+    }
+    x() {
+      super();
+    }
+  };
+  public GetterLazyInAnonymousClass() {
+    super();
+  }
+}