IN PROGRESS - issue BATCH-572: Retryable exceptions cannot be skippable

StatefulRetryStepFactoryBean functionality all moved into SkipLimitStepFactoryBean (the former should be removed). TODO: take some more care with exception types that overlap between retry / skip.

spring-batch-infrastructure/src/test/java/org/springframework/batch/retry/policy/ExceptionClassifierRetryPolicyTests.java

@@ -52,6 +52,17 @@ public class ExceptionClassifierRetryPolicyTests extends TestCase {
 		}
 	}
 
+	public void testNullContext() throws Exception {
+		Map map = new HashMap();
+		map.put(ExceptionClassifierSupport.DEFAULT, new NeverRetryPolicy());
+		policy.setPolicyMap(map);
+
+		RetryContext context = policy.open(null, null);
+		assertNotNull(context);
+
+		assertTrue(policy.canRetry(context));
+	}
+
 	public void testClassifierOperates() throws Exception {
 
 		Map map = new HashMap();