Added deleteNodeProperties to AVMService interface. Fits in well with NodeService

behavior.  Outline of implementation of AVMNodeService, an AVM based 
implementationof NodeService.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/WCM-DEV2/root@3438 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

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

@@ -166,4 +166,9 @@ interface AVMNode
      * @param name The name of the property.
      */
     public void deleteProperty(QName name);
+    
+    /**
+     * Delete all properties from this node.
+     */
+    public void deleteProperties();
 }