Added setUsername().

git-svn-id: https://samskivert.googlecode.com/svn/trunk@2612 6335cc39-0255-0410-8fd6-9bcaacd3b74c

src/java/com/samskivert/servlet/user/User.java

@@ -58,6 +58,15 @@ public class User
      * affiliation, if you will.) */
     public int siteId;
 
+    /**
+     * Updates the user's username.
+     */
+    public void setUsername (Username username)
+    {
+        this.username = username.getUsername();
+        setModified("username");
+    }
+
     /**
      * Updates the user's real name.
      */