function
  (dbus_connection_dispatch): On disconnect unref any shared connections

* dbus/dbus-bus.c (_dbus_bus_check_connection_and_unref): new function
  for cleaning up shared connections on disconnect
  (internal_bus_get): get a hard refrence to shared connections when
  they are created

* doc/TODO: Remove items which are no longer relevent or have been fixed
  Split 1.0 todo items with a 0.90 freeze todo list