[kfreebsd] Fix maintenance of GC statistics.
[kfreebsd] Rewrite GC logic to utilize fixed-point values.
[kfreebsd] Add support for finalization.
[kfreebsd] Implement gradual consumption of mbuf(9) chains.
[kfreebsd] Free captured mbuf(9)s on interface clean-up.
[kfreebsd] Separate management of FreeBSD-specific memory allocations.
[kfreebsd] Add memory allocation statistics.