+ o libudev enumerate
+ add buses and drivers
+ add /sys/block/ scanning crap
+ use enumerate for "trigger"
+ o libudev queue - interface for /dev/.udev/queue/ state
+ use queue interface for "settle"
+ o relace test/sys/ with current sysfs layout
+ o use libudev device in udev_rules.c
+ get rid of udevice, store rule matching state in rule iterator
+ o rework rules to a match-action list, instead of a rules array