- Add support of MK_INET_SUPPORT=no.

- Fix a bug in sodump() which prevented struct sockaddr_in6 from displaying.
- Fix a bug in in fiboptlist_csv() which could cause free() of uninitialized
  pointer.
- Style cleanups:
 . Add missing "static" keywords.
 . Use an array of struct sockaddr_storage instead of sockunion for rtmsg.
 . Use err() and errx() instead of pair of fprintf(stderr, "...") + exit(1).
 . Use nitems() macro.
 . Various style(9) fixes.

sbin/route/Makefile

@@ -10,11 +10,12 @@ WARNS?=	3
 CLEANFILES+=keywords.h
 
 CFLAGS+= -DNS
-
+.if ${MK_INET_SUPPORT} != "no"
+CFLAGS+= -DINET
+.endif
 .if ${MK_INET6_SUPPORT} != "no"
 CFLAGS+= -DINET6
 .endif
-
 CFLAGS+= -I.
 
 keywords.h: keywords