By default, require an exact match of the process name and argument list.

This allows running several instances of the same rc.d(8) script by just
linking it to different name.
e.g.
ln -s ftpproxy ftpproxy6
echo 'ftpproxy6_flags=-6' >>/etc/rc.conf.local
This is likely to break some rc.d scripts in ports. I will try and fix them all
in the next few days but I'd appreciate reports if I missed some.
ok halex@

src/etc/rc.d/rc.subr

@@ -1,4 +1,4 @@
-#	$OpenBSD: rc.subr,v 1.98 2015/07/15 12:26:25 ajacoutot Exp $
+#	$OpenBSD: rc.subr,v 1.99 2015/07/15 13:48:16 ajacoutot Exp $
 #
 # Copyright (c) 2010, 2011, 2014 Antoine Jacoutot <ajacoutot@openbsd.org>
 # Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
@@ -157,15 +157,15 @@ rc_start() {
 }
 
 rc_check() {
-	pgrep -q -f "^${pexp}"
+	pgrep -q -xf "${pexp}"
 }
 
 rc_reload() {
-	pkill -HUP -f "^${pexp}"
+	pkill -HUP -xf "${pexp}"
 }
 
 rc_stop() {
-	pkill -f "^${pexp}"
+	pkill -xf "${pexp}"
 }
 
 rc_cmd() {