Server side implementation of AVM remote interface. Made Serializable

several classes that needed to be.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/WCM-DEV2/root@3489 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/avm/LayeringDescriptor.java

@@ -17,13 +17,17 @@
 
 package org.alfresco.repo.avm;
 
+import java.io.Serializable;
+
 /**
  * A value class containing information about the layering state of a looked up
  * node.
  * @author britt
  */
-public class LayeringDescriptor
+public class LayeringDescriptor implements Serializable
 {
+    private static final long serialVersionUID = -6911813236493434123L;
+
     /**
      * Whether the node is a background node.
      */