UTIL: rearranged packaging
CALL: Simple (& compact) RPC call mechanism; very similar to RMI
- FIX: Own RPC implementation, which shall allow
	* Transparent sessionId passing
	* Optimimized data transfer (compress + no_desc)
	* No need for "Stub/Skeleton"
	* Allow proxy service for starting RPC call
	* Extensible to other call types than "stream call" (like in RMI)
CALL: Improved "nodesc" IO
- FIX: support "hard coded" types for maximal compactness
	* only 1 byte needed to encode types