add Berkeley specific headers

add Berkeley specific headers

SCCS-vsn: sbin/routed/query/query.c 5.8
SCCS-vsn: sbin/routed/trace/trace.c 5.4
SCCS-vsn: sbin/routed/af.c 5.7
SCCS-vsn: sbin/routed/af.h 5.5
SCCS-vsn: sbin/routed/defs.h 5.4
SCCS-vsn: sbin/routed/if.c 5.4
SCCS-vsn: sbin/routed/inet.c 5.6
SCCS-vsn: sbin/routed/input.c 5.15
SCCS-vsn: sbin/routed/interface.h 5.4
SCCS-vsn: sbin/routed/main.c 5.12
SCCS-vsn: sbin/routed/output.c 5.9
SCCS-vsn: sbin/routed/startup.c 5.11
SCCS-vsn: sbin/routed/table.h 5.5
SCCS-vsn: sbin/routed/tables.c 5.11
SCCS-vsn: sbin/routed/timer.c 5.5
SCCS-vsn: sbin/routed/trace.c 5.4
SCCS-vsn: sbin/routed/trace.h 5.3