bus-proxyd: show address nicely in --help
bus-proxyd: use a loop instead of c&p
man: add systemd-dbus-proxy@.service(8) and systemd-dbus.proxy(8)
build-sys: add xml sources to EXTRA_DIST

Apparently automake does not include the sources if they are under
a conditional that is disabled when making dist. This means that
everything would have to be enabled to make distcheck work.
loginctl,shell-completions: fix listing of sessions/users/seats
loginctl: correctly show session IDs on session-status

Commit f8f14b3654bcd introduced a regression that makes
loginctl session-status to not show the correct session ID(s)

In print_session_status_info() the map[] array, element "Seat" receives
the offset of the "id" in "SessionStatusInfo" struct instead of the
offset of the "seat" member.

This will cause prop_map_first_of_struct() function to overwrite the
SessionStatusInfo.id memory with seats if there are any.

Fix this typo by using the "seat" member.

Before:
 - tixxdz (1000)
          Since: Sat 2013-12-21 10:07:23 CET; 5h 26min ago
         Leader: 1265 (sshd)

After:
1 - tixxdz (1000)
           Since: Sat 2013-12-21 10:07:23 CET; 5h 26min ago
          Leader: 1265 (sshd)
tmpfiles: replace readdir_r with readdir
delta: replace readdir_r with readdir
login: replace readdir_r with readdir
core: replace readdir_r with readdir
install: replace readdir_r with readdir

The old code incorrectly assumed that readdir_r updates errno.
util: replace readdir_r with readdir

This fixes rm_rf_children_dangerous to detect errors during directory
reading.  Previously, it could dereference an uninitialized pointer.
journal/vacuum: replace readdir_r with readdir
journald/server: replace readdir_r with readdir

The available_space function now returns 0 if reading the directory
fails.  Previously, such errors were silently ignored.
conf-files: replace readdir_r with readdir
journal: replace readdir_r with readdir

This commit also adds error handling for failures during
directory reading.
util: remove union dirent_storage