Integrate animal sniffer

Animal sniffer provides tools to assist verifying that classes
compiled with a newer JDK are compatible with an older JDK.

This integratesthe latest version of the tool (1.11) that
permits the use of custom annotations. Added @UsesJava7,
@UsesJava8 and @UsesSunHttpServer and annotated the few places
where we rely on a specific environment.

The verification process can be invoked by running the 'sniff'
task.

Issue: SPR-11604

polishing

spring-beans/src/main/java/org/springframework/beans/propertyeditors/ZoneIdEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2014 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.
@@ -19,6 +19,8 @@ package org.springframework.beans.propertyeditors;
 import java.beans.PropertyEditorSupport;
 import java.time.ZoneId;
 
+import org.springframework.core.UsesJava8;
+
 /**
  * Editor for {@code java.time.ZoneId}, translating zone ID Strings into {@code ZoneId}
  * objects. Exposes the {@code TimeZone} ID as a text representation.
@@ -28,6 +30,7 @@ import java.time.ZoneId;
  * @see java.time.ZoneId
  * @see TimeZoneEditor
  */
+@UsesJava8
 public class ZoneIdEditor extends PropertyEditorSupport {
 
 	@Override