Features:
+* libsystemd-bus:
+ - default policy (allow uid == 0 and our own uid)
+ - enforce alignment of pointers passed in
+ - negotiation for attach attributes
+ - verify that the PID doesn't change for existing busses
+ - when kdbus doesn't take our message without memfds, try again with memfds
+ - kdbus: generate correct bloom filter for matches
+ - implement translator service
+ - port systemd to new library
+ - implement busname unit type in systemd
+ - move to gvariant
+ - minimal locking around the memfd cache
+ - keep the connection fds around as long as the bus is open
+ - make ref counting atomic
+ - merge busctl into systemctl or so?
+
* in the final killing spree, detect processes from the root directory, and
complain loudly if they have argv[0][0] == '@' set.
https://bugzilla.redhat.com/show_bug.cgi?id=961044