Provide JBossWeb SSO valve that will work when only the WebAuthentication login module is used

Possible draft release notes content: Cause and Consequence: Customers that are attempting to implement a custom login process using only the WebAuthentication for their web application run into problems when this approach is used in a Clustered SSO environment. This is because the SSO re-authentication logic is implemented in the Form and Basic authenticators. These authenticators are not used in the case when only the WebAuthentication module is used. There is no valve/authenticator that should be used if the customer is only using the WebAuthentication approach Fix: a new CustomNonLoginAuthenticator which extends AuthenticatorBase is provided and it will work when only the WebAuthentication login module is used. Result: the new CustomNonLoginAuthenticator allows customers to implement a custom login process using only the WebAuthentication(non Form/Basic authenticators) for their web application in a Clustered SSO environment. They can enable CustomNonLoginAuthenticator in context.xml of their application if they only want to use the WebAuthentication approach like follows: <Context cookies="true" crossContext="true">    <Valve className="org.jboss.web.tomcat.security.authenticators.CustomNonLoginAuthenticator" /> </Context>