OPEN - issue BATCH-364: StepScope responsibilities can be assumed by Step (not ApplicationContext)

http://jira.springframework.org/browse/BATCH-364

Extend columns in attrs table -to avoid crashes resulting in optimistic lock failure.

spring-batch-samples/src/main/resources/jobs/adhocLoopJob.xml

@@ -18,10 +18,7 @@
 			<bean id="step1" parent="taskletStep">
 				<property name="tasklet">
 					<bean id="module"
-						class="org.springframework.batch.sample.tasklet.InfiniteLoopTasklet"
-						scope="step">
-						<aop:scoped-proxy />
-					</bean>
+						class="org.springframework.batch.sample.tasklet.InfiniteLoopTasklet"/>
 				</property>
 				<property name="listener">
 					<bean