CORBA3 — Generic operations for subscribing/unsubscribing at publishing ports

generic operations for subscribing and unsubscribing at publishing ports of components should have the same funtionality as the specific ones. Therefore the generic unsubscribe operation should return the unsubscribed consumer reference like the specific operation does. proposal: change

void unsubscribe (in FeatureName publisher_name, in Cookie ck) raises (InvalidName, InvalidConnection);

to

EventConsumerBase unsubscribe (in FeatureName publisher_name, in Cookie ck) raises (InvalidName, InvalidConnection);

see above