- Update to version 4.18.3
* shutdown: Do not set an error when returning TRUE
* logout-dialog: Fix use-after-free
* Use glib wrappers for memory allocation
* build: Fix build when there is no suspend/hibernate support
* build: Add suspend support for Solaris
* startxfce4: Fix xinit arguments order
* manager: Always use xfsm_manager_save_yourself_dbus() (Fixes #106)
* settings: Remove useless tooltip
* xflock4: Update fallback list
* logout-dialog: Lower warning level
* shutdown: Keep error NULL when unused
* cleanup: Remove dead polkit code
* Revert "Fallback to old method for shutdown (bug #8630)."
* Use g_critical() instead of g_error()
* Use GLib logging functions or g_printerr() instead of g_print()
* Use GLib logging functions instead of g_printerr()
* build: Fix untranslated policykit file
* Escape/unescape string list delimiter when saving/restoring session
* Replace XfceRc with GKeyFile for session file parsing
* Translation Updates