public Target connect(Spec spec, Object context) {
        return transport.connect(this, spec, context);
    }
Connects to the given address. The new {@link Target} will be
associated with this Supervisor and will have 'context' as
application context.

@return Target representing our end of the connection
@param spec where to connect
@param context application context for the Target
@see Target#getContext
jrt/src/com/yahoo/jrt/Supervisor.java