* Merge from debian. Remaining changes:
  - 06_fix-suspend-auth-check.patch: added, correctly check for suspend
    permissions before disabling the corresponding drop-down menu item.
    lp #929537
  - 08_show_preferences_lxde.patch: Hide settings menu only on desktop
    environment which have another power manager.
  - Switch to using logind for session tracking. Depend on systemd-services
    instead of consolekit recommends, and add libsystemd-login-dev build
    dependency.
  - 05_dont-allow-systemd-to-handle-suspend-hibernate-events.patch
  - 06_add-shutdown-reboot-functionality-for-systemd.patch
  - 07_fix-screen-dimming.patch
  - 09_sync_session_xfpm_lock_setting.patch
  - 10_inhibit_logind.patch