Early resolution of unique factory methods in configuration classes

Includes consistent bean class resolution in the enhancement step as well as general reflection optimizations for user-declared methods.

Closes gh-22420

spring-aop/src/main/java/org/springframework/aop/aspectj/annotation/ReflectiveAspectJAdvisorFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -153,7 +153,7 @@ public class ReflectiveAspectJAdvisorFactory extends AbstractAspectJAdvisorFacto
 			if (AnnotationUtils.getAnnotation(method, Pointcut.class) == null) {
 				methods.add(method);
 			}
-		});
+		}, ReflectionUtils.USER_DECLARED_METHODS);
 		methods.sort(METHOD_COMPARATOR);
 		return methods;
 	}