- test (now fixed) /dev/tape/ links

- /run/udev/control socket

(add ConditionVirtualization=!pidns)

- move udevd -> --libexecdir

- have a $attrs{} ?

- kill rules_generator

- move udevadm -> --bindir

- remove deprecated trigger --type=failed logic

- remove deprecated BUS=, SYSFS{}=, ID= keys

- kill tabs?

- warn about RUN+="socket:"

- libudev.so.1 with symbol versioning:

- return object with *_unref()

- udev_monitor_from_socket()