An empty partition table is a valid partition table (happens when a master didn't get any from a storage). A missing partition table must be detected with a None value.
Don't trash data we received from previous primary master when getting disconnected. It is still valuable, and interesting to fetch from neoctl.


git-svn-id: https://svn.erp5.org/repos/neo/branches/prototype3@1035 71dcc9de-d417-0410-9af5-da40c76e7ee4