Bugfixes:
+* update COPYRIGHT in our README:
+ http://ftp-master.metadata.debian.org/changelogs//main/s/systemd/systemd_204-2_copyright
+
* the running hwdb seems not to pick up updated database files without
an explicit: udevadm control --reload
Features:
+* rename F_TYPE_CMP() to F_TYPE_EQUAL()
+
* unlink PID files of units after exit
* tiny tool that saves/restores backlight