Upstream changes:
* Remove DPMS support in favor of a wrapper script and xset(1).
* Indicate that the --inactivity-timeout option takes an argument. (Thanks
Kenneth Lyons)
* fix pam_securetty: set PAM_TTY to getenv("DISPLAY")
* Eat XKB_KEY_Delete and XKB_KEY_KP_Delete (Thanks bebehei)
* Show unlock indicator if password was entered during PAM verification
* Allow CTRL+J as enter and CTRL+H as backspace (Thanks Karl Tarbe)
* Flush xcb connection after opening fullscreen window (Thanks martin)
* Add support for `xss-lock --transfer-sleep-lock'
92db7d211f