Fixed general test suite problems found during OpenJDK 8 upgrade

Issue: SPR-9639
(cherry picked from commit 19f783b)

spring-test-mvc/src/test/java/org/springframework/test/web/Person.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2013 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.
@@ -79,10 +79,15 @@ public class Person {
 				ObjectUtils.nullSafeEquals(this.someBoolean, otherPerson.someBoolean));
 	}
 
+	@Override
+	public int hashCode() {
+		return Person.class.hashCode();
+	}
+
 	@Override
 	public String toString() {
 		return "Person [name=" + this.name + ", someDouble=" + this.someDouble
 				+ ", someBoolean=" + this.someBoolean + "]";
 	}
 
-}
+}