Fix KASSERT argument type.
Disable tests that don't pass on FreeBSD due to missing support in
humanize_number(3). Bringing in additional revisions from NetBSD's
humanize_number(3) will fix the tests

Account for the fact that util.h on NetBSD is libutil.h on FreeBSD

Submitted by: pho
Sponsored by: EMC / Isilon Storage Division
Add missing #include <sys/time.h> for gettimeofday

Sponsored by: EMC / Isilon Storage Division