AbstractApplicationContext logs initialization exception before trying to cancel refresh attempt

Issue: SPR-12010
(cherry picked from commit 5e2fbe7)

spring-context/src/main/java/org/springframework/context/support/AbstractApplicationContext.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.
@@ -486,6 +486,8 @@ public abstract class AbstractApplicationContext extends DefaultResourceLoader
 			}
 
 			catch (BeansException ex) {
+				logger.warn("Exception encountered during context initialization - cancelling refresh attempt", ex);
+
 				// Destroy already created singletons to avoid dangling resources.
 				destroyBeans();