AspectJExpressionPointcut consistently resolves superinterface methods

Includes efficient check for same ClassLoader in ClassUtils.isVisible, efficient MethodMatchers check for IntroductionAwareMethodMatcher, and supertype method resolution in MethodMapTransactionAttributeSource.

Issue: SPR-16723

(cherry picked from commit b95e05d)

spring-beans/src/test/java/org/springframework/tests/sample/beans/AgeHolder.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2002-2018 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.tests.sample.beans;
+
+public interface AgeHolder {
+
+	default int age() {
+		return getAge();
+	}
+
+	int getAge();
+
+	void setAge(int age);
+
+}

spring-beans/src/test/java/org/springframework/tests/sample/beans/ITestBean.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2007 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -27,11 +27,7 @@ import java.io.IOException;
  * @author Rod Johnson
  * @author Juergen Hoeller
  */
-public interface ITestBean {
-
-	int getAge();
-
-	void setAge(int age);
+public interface ITestBean extends AgeHolder {
 
 	String getName();