Deprecate JpaSystemException(PersistenceException) constructor to prepare for removal in Spring 5

Issue: SPR-13827
(cherry picked from commit 9ee1dc7)

spring-orm/src/main/java/org/springframework/orm/jpa/EntityManagerFactoryUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -415,7 +415,7 @@ public abstract class EntityManagerFactoryUtils {
 
 		// If we have another kind of PersistenceException, throw it.
 		if (ex instanceof PersistenceException) {
-			return new JpaSystemException((PersistenceException) ex);
+			return new JpaSystemException(ex);
 		}
 
 		// If we get here, we have an exception that resulted from user code,

spring-orm/src/main/java/org/springframework/orm/jpa/JpaSystemException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -32,6 +32,7 @@ import org.springframework.dao.UncategorizedDataAccessException;
 @SuppressWarnings("serial")
 public class JpaSystemException extends UncategorizedDataAccessException {
 
+	@Deprecated
 	public JpaSystemException(PersistenceException ex) {
 		super(ex.getMessage(), ex);
 	}