need libkern.h include file
proper sizing the dev array on first device (from Glass & Torek)
4.4BSD snapshot (revision 8.1); add 1993 to copyright
separate out event counters
add cfroots & simplify; allow duplicate config data; add eventsand make dv_xname an array for export
make kernel includes standard
update from Torek
fix LBL contrib notice
from Chris Torek