man: add permalinks to subsection titles too
Rearrange a few fields to reduce holes
systemd-python: add __version__ strings
systemd-python: add wrappers for easy functions in sd-login

sd_get_uids, sd_get_seats, sd_get_sessions, and sd_get_machine_names.
condition, man: Add support for ConditionSecurity=smack

According to Documentation/security/Smack.txt:
  In keeping with the intent of Smack, configuration data is minimal
  and not strictly required. The most important configuration step is
  mounting the smackfs pseudo filesystem.
This means that checking the mount point should be enough.