Fix in LUA support
Add a new parameter in the LUA function AddUAVariable. The new function use 6 parameters.
AddUAVariable(char* aNodeId, 
		char* szBrowseName, 
		char* typeDefinition, 
		int builtinType, 
		int arraySize,
		int accessLevel)

The Vpis configuration is now load asynchronously. It provide more flexibility in the server behaviour.
Fix on AddTag function lua script. This function allows to create a tag associated with a Vpi