This singleton holds an instance of the web servlet context.
This is needed for running WebWork on Weblogic Server 6.1
because there is no provision to retrieve the servlet context
from the web session object.
This class is created to bet that this singleton can be set by
com.opensymphony.webwork.dispatcher.FilterDispatcherCompatWeblogic61 before the servlet context is needed by
com.opensymphony.webwork.lifecycle.SessionLifecycleListener which will use this object to get it.
author: Scott N. Smith scottnelsonsmith@yahoo.com version: $Id: ServletContextSingleton.java 897 2005-06-25 16:15:18Z plightbo $