widened AbstractFactoryBean's "getObjectType" signature to return any Class as well (SPR-6872)

org.springframework.beans/src/main/java/org/springframework/beans/factory/config/AbstractFactoryBean.java

 /*
- * Copyright 2002-2009 the original author or authors.
+ * Copyright 2002-2010 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.
@@ -193,7 +193,7 @@ public abstract class AbstractFactoryBean<T>
 	 * interface, for a consistent offering of abstract template methods.
 	 * @see org.springframework.beans.factory.FactoryBean#getObjectType()
 	 */
-	public abstract Class<? extends T> getObjectType();
+	public abstract Class<?> getObjectType();
 
 	/**
 	 * Template method that subclasses must override to construct