src.conf ignored; phantom named

I set WITHOUT_BIND="yes" in /etc/src.conf, and built/installed world.
Not only does /usr/sbin/named exist - named is actually started!
Several other WITHOUT_* variables also were apparently ignored, as
evidenced by stuff installed on running system.

My main question is - how do I debug this?  I have been combing over
makefiles under /usr/src (not to mention, going through /etc/rc.d/
trying to figure out what actually started named).  As far as I
ascertain, _WITHOUT_SRCCONF is *not* set anywhere for world building;
named_enable="no" in relevant rc.conf files; rpcbind and ntpd are not
running either.  Since named daemonized, it's not easy to tell who
started it - and grepping everything in sight, I can't figure out how
it got built in the first place.

uname -a:
FreeBSD xyz.example.com 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Thu Feb 29
10:28:17 CST 2012    root_at_xyz.example.com:/usr/obj/usr/src/sys/CUSTOM
amd64

I focused substantial attention on /usr/src/share/bsd.own.mk and
worked outward; but did not find anything obvious.

Advice on where to poke for the right information, much appreciated.