Get sendmail to detect when to use the setproctitle() in libutil

This uses osreldate.h and other stuff to determine whether it's on a
-current system.  It should still compile cleanly on a -stable branch
system.

usr.sbin/sendmail/src/Makefile

@@ -24,8 +24,8 @@ SRCS=	alias.c arpadate.c clock.c collect.c conf.c convtime.c daemon.c \
 	mci.c mime.c parseaddr.c queue.c readcf.c recipient.c savemail.c \
 	srvrsmtp.c stab.c stats.c sysexits.c trace.c udb.c usersmtp.c \
 	util.c version.c
-DPADD=
-LDADD=
+DPADD=	${LIBUTIL}
+LDADD=	-lutil
 MAN1=	mailq.1 newaliases.1
 MAN5=	aliases.5
 MAN8=	sendmail.8

usr.sbin/sendmail/src/conf.h

@@ -596,8 +596,17 @@ typedef int		pid_t;
 # endif
 # if defined(__FreeBSD__)
 #  undef SPT_TYPE
-#  define SPT_TYPE	SPT_REUSEARGV
-#  define SPT_PADCHAR	'\0'	/* pad process title with nulls */
+#  if __FreeBSD__ == 2
+#   include <osreldate.h>		/* and this works */
+#   if __FreeBSD_version >= 199512	/* 2.2-current right now */
+#    define SPT_TYPE	SPT_BUILTIN
+#    include <libutil.h>
+#   endif
+#  endif
+#  ifndef SPT_TYPE
+#   define SPT_TYPE	SPT_REUSEARGV
+#   define SPT_PADCHAR	'\0'	/* pad process title with nulls */
+#  endif
 # endif
 #endif