Bug 328273 added serializable to default user identity

git-svn-id: svn+ssh://dev.eclipse.org/svnroot/rt/org.eclipse.jetty/jetty/trunk@2371 7e9141cc-0065-0410-87d8-b60c137991c4

VERSION.txt

@@ -1,6 +1,7 @@
 
  + 328199 Ensure blocking connectors always close socket
  + 328205 Improved SelectManager stopping
+ + 328273 Added serializable to default user identity
 
 jetty-7.2.0.v20101020 20 October 2010
  + 289540 added javadoc into distribution

jetty-security/src/main/java/org/eclipse/jetty/security/DefaultUserIdentity.java

@@ -13,6 +13,7 @@
 
 package org.eclipse.jetty.security;
 
+import java.io.Serializable;
 import java.security.Principal;
 
 import javax.security.auth.Subject;
@@ -25,9 +26,11 @@ import org.eclipse.jetty.server.UserIdentity;
  * The default implementation of UserIdentity.
  *
  */
-public class DefaultUserIdentity implements UserIdentity
+public class DefaultUserIdentity implements UserIdentity, Serializable
 {
-    private final Subject _subject;
+	private static final long serialVersionUID = 2418992006515454163L;
+	
+	private final Subject _subject;
     private final Principal _userPrincipal;
     private final String[] _roles;