I'm looking at BasicuserCredentialsDeployer, and I don't think you can change the name now.
However the path should be the classpath.
It seems there's some space for improvements at this area. We have JAAS integration, but I guess it should be possible to configure this in a better way.
Ya, don't know if users will have a need for it or not. We'll see as they use the Spring integration and simpler embedded integration I did.