Add default serialVersionUID to two classes.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1383556 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/csv/CSVFormat.java

@@ -29,6 +29,8 @@ import java.io.StringWriter;
  */
 public class CSVFormat implements Serializable {
 
+    private static final long serialVersionUID = 1L;
+
     /** According to RFC 4180, line breaks are delimited by CRLF */
     public static final String CRLF = "\r\n";
     

src/main/java/org/apache/commons/csv/CSVRecord.java

@@ -27,6 +27,8 @@ import java.util.Map;
  */
 public class CSVRecord implements Serializable, Iterable<String> {
     
+    private static final long serialVersionUID = 1L;
+
     private static final String[] EMPTY_STRING_ARRAY = new String[0];
     
     /** The values of the record */