element model release 4-7

New samples package.
ArkLocks are no longer reentrant.
Configuration of multiple top-level rolons is now supported.
New getCompoundPathname for navigating multiple arks.
Responses are now returned using the new ROUTE operation.
A contextMap is now used with commands and route operations.

I'll note that by using the route operation to return command responses, sockets will be fully bi-directional with no session tracking on the "server" side.