1 - move cc opts from autogen to configure.ac
3 - move /lib/udev/devices/ to tmpfiles
5 - trigger --subsystem-match=usb/usb_device
7 - test (now fixed) /dev/tape/ links
9 - move udevadm -> --bindir
13 - kill rules_generator
17 - deprecate and warn about RUN+="socket:"
21 - return object with *_unref()
22 - udev_monitor_from_socket()
23 - udev_queue_get_failed_list_entry()