- All incoming connections start with the identification handler which will
apply the right handler depending on the current cluster state and the node
type. So we are now sure that a node is well identified, got an UUID and is
registered into the node manager when it leaves the identification handler.
- During service, clietnt and storage nodes have their own handler


git-svn-id: https://svn.erp5.org/repos/neo/branches/prototype3@686 71dcc9de-d417-0410-9af5-da40c76e7ee4