Comet fix fix

AsyncRenderComet should be a MessageCometActor. Use BaseCometActor in
more places.

web/webkit/src/main/scala/net/liftweb/builtin/comet/AsyncRenderComet.scala

@@ -35,12 +35,10 @@ private case class Render(js: JsCmd)
  * 
  * None of these requires explicit use of `buildDeferredFunction`.
  */
-class AsyncRenderComet extends CometActor {
+class AsyncRenderComet extends MessageCometActor {
 
   override def lifespan: Box[TimeSpan] = Full(90.seconds)
 
-  def render = NodeSeq.Empty
-
   // make this method visible so that we can initialize the actor
   override def initCometActor(creationInfo: CometCreationInfo) {
     super.initCometActor(creationInfo)

web/webkit/src/main/scala/net/liftweb/http/CometActor.scala

@@ -296,8 +296,8 @@ abstract class LiftActorJWithListenerManager extends LiftActorJ with ListenerMan
  *
  * @see ListenerManager
  */
-trait CometListener extends CometActor {
-  self: CometActor =>
+trait CometListener extends BaseCometActor {
+  self: BaseCometActor =>
 
   /**
    * This controls which Actor to register with for updates. Typically

web/webkit/src/main/scala/net/liftweb/http/NamedCometActorTrait.scala

@@ -21,7 +21,7 @@ import util.Helpers._
 import common.{Loggable, Full}
 
 
-trait NamedCometActorTrait extends CometActor with Loggable {
+trait NamedCometActorTrait extends BaseCometActor with Loggable {
 
   /**
    * First thing we do is registering this comet actor

web/webkit/src/main/scala/net/liftweb/http/NamedCometDispatcher.scala

@@ -27,7 +27,7 @@ class NamedCometDispatcher(name: Box[String]) extends LiftActor with Loggable {
 
   logger.debug("DispatcherActor got name: %s".format(name))
 
-  private var cometActorsToUpdate: Vector[CometActor]= Vector()
+  private var cometActorsToUpdate: Vector[BaseCometActor]= Vector()
 
   override def messageHandler  = {
     /**
@@ -69,6 +69,6 @@ class NamedCometDispatcher(name: Box[String]) extends LiftActor with Loggable {
  * register each named comet actor with a dispatcher that
  * only updates the specific version it monitors
  */
-case class registerCometActor(actor: CometActor, name: Box[String])
-case class unregisterCometActor(actor: CometActor)
+case class registerCometActor(actor: BaseCometActor, name: Box[String])
+case class unregisterCometActor(actor: BaseCometActor)
 case class CometName(name: String)