TODO

>>>>>>>>>>>>>>>>> get nr of of regsets from somewhere

provide a command to req the process tree starting at any point

in utracer.c, trace registering apps & report death; auto-unregister
research self-unload of module

maybe consolidate all responses through a single /proc entry?  or put a select
in the userspace response thread for multiple entry fds?

provide a means of customising responses to report_* events.

