track connection in the bus instead of the endpoint; add monitoring
allow privileged users to act on behalf of somebody else
kdbus: prefix NULL enums with an underscore since they aren't really supposed to be used
track connection state in 'type' not in 'active'
pool: accept only anonymous memory
connection: link into bus only after HELLO, not at open()
names: use KDBUS_ITEM_NEXT to pad to alignment; avoid sizeof(item)
names: add KDBUS_ITEM_NEXT, pad to alignment