Allow for a reference to the static NamingContext.localServer field to be returned from the org.jnp.interfaces.NamingContext.checkRef(Hashtable) method for a given java.naming.provider.url.

Use cases exist where applications use property files to specify JNDI connection properties such as java.naming.factory.initial and java.naming.provider.url. The apps are written in such a way that require these properties be explicitly defined, even though the default in-container initial context is what will be used.

Customers are currently specifying something like:
java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.provider.url=jnp://abcxyz:1099/

However, this approach has several drawbacks, including:
1) Server names are hard-coded in property files, which reduces deployment flexibility
2) This approach appears to use a socket connection, which is probably not as efficient as the in-container initial context.

For these use cases, customers would like to specify a value java.naming.factory.initial and java.naming.provider.url that will result in the default in-container InitialContext being used. Not specifying any properties will give this context, but the way some applications are written, something needs to be passed.