[orchestra] conversation timeout checking thread change

[Mario Ivankovits <ma...@ops.co.at>]

Hi!

I made some changes to conserve resources regarding the
conversation-timeout-checking thread.
We had one thread per session which might become "heavy-weight" if you
have to deal with a lot of sessions.

Using a listener we are now able to drop down to just one thread per
context.

Those already using Orchestra and using the latest head version have to
add the following listener to their web.xml configuration:

    <listener>
       
<listener-class>org.apache.myfaces.orchestra.conversation.servlet.ConversationManagerSessionListener</listener-class>
    </listener>


Ciao,
Mario