BATCH-762: cleanup and java doc changes

spring-batch-core/src/main/java/org/springframework/batch/core/repository/support/ExecutionContextStringSerializer.java

@@ -19,7 +19,10 @@ package org.springframework.batch.core.repository.support;
 import java.util.Map;
 
 /**
- * @author trisberg
+ * Interface defining serialization support for execution context Map in the form of a String.
+ *  
+ * @author Thomas Risberg
+ * @since 2.0
  */
 public interface ExecutionContextStringSerializer {
 

spring-batch-core/src/main/java/org/springframework/batch/core/repository/support/XStreamExecutionContextStringSerializer.java

@@ -26,7 +26,10 @@ import java.util.Map;
 import org.springframework.beans.factory.InitializingBean;
 
 /**
- * @author trisberg
+ * Implementation that uses XStream and Jettison to provide serialization.
+ * 
+ * @author Thomas Risberg
+ * @since 2.0
  */
 public class XStreamExecutionContextStringSerializer implements ExecutionContextStringSerializer, InitializingBean {