IN PROGRESS - issue BATCH-24: Provide exit code for job executed as a main method

http://opensource.atlassian.com/projects/spring/browse/BATCH-24

JvmSystemExiter was in test instead of main.

execution/src/main/java/org/springframework/batch/execution/bootstrap/support/JvmSystemExiter.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2006-2007 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.batch.execution.bootstrap.support;
+
+import org.springframework.batch.execution.bootstrap.SystemExiter;
+
+/**
+ * Implementation of the {@link SystemExiter} interface
+ * that calls the standards System.exit method.  It should
+ * be noted that there will be no unit tests for this class,
+ * since there is only one line of actual code, that would only
+ * be testable by mocking System or Runtime.
+ * 
+ * @author Lucas Ward
+ *
+ */
+public class JvmSystemExiter implements SystemExiter {
+
+	/* (non-Javadoc)
+	 * @see org.springframework.batch.execution.bootstrap.SystemExiter#exit(int)
+	 */
+	public void exit(int status) {
+		System.exit(status);
+	}
+
+}