Log Message:
dbus: update to 1.12.4.

dbus 1.12.4 (2018-02-08)
========================

The “Stria Campania 115” release.

Fixes:

• When iterating the DBusConnection while blocking on a pending call,
  don't wait for I/O if that pending call already has a result; and make
  sure that whether it has a result is propagated in a thread-safe way.
  This prevents certain multi-threaded calling patterns from blocking
  until their timeout even when they should have succeeded sooner.
  (fd.o #102839; Manish Narang, Michael Searle)

• Report the correct error if OOM is reached while trying to listen
  on a TCP socket (fd.o #89104, Simon McVittie)

• Fix assertion failures in recovery from OOM while setting up a
  DBusServer (fd.o #89104, Simon McVittie)

• Add a missing space to a warning message (fd.o #103729, Thomas Zajic)

• Expand ${bindir} correctly when pkg-config is asked for dbus_daemondir
  (fd.o #104265, Benedikt Heine)

• On Linux systems with systemd < 237, if ${localstatedir}/dbus doesn't
  exist, create it before trying to create ${localstatedir}/dbus/machine-id
  (fd.o #104577, Chris Lesiak)

• Fix escaping in dbus-api-design document (fd.o #104925, Philip Withnall)