Drop pf_rules and ipsec_rules from rc.conf(5); it shouldn't have been made

tweakable: there's no real point and these files support the 'include' option so
one can always get its config from whatever path... especially useful when
testing a new ruleset.
man page inputs from schwarze@
ok halex@ schwarze@ rpe@ deraadt@

src/etc/rc

@@ -1,4 +1,4 @@
-#	$OpenBSD: rc,v 1.448 2015/03/11 14:48:58 krw Exp $
+#	$OpenBSD: rc,v 1.449 2015/05/02 09:35:44 ajacoutot Exp $
 
 # System startup script run by init on autoboot
 # or after single-user.
@@ -362,8 +362,8 @@ sh /etc/netstart
 dmesg > /dev/random	# any write triggers a rekey
 
 if [ X"${pf}" != X"NO" ]; then
-	if [ -f ${pf_rules} ]; then
-		pfctl -f ${pf_rules}
+	if [ -f /etc/pf.conf ]; then
+		pfctl -f /etc/pf.conf
 	fi
 	# bring up pfsync after the working ruleset has been loaded
 	if [ -f /etc/hostname.pfsync0 ]; then
@@ -392,8 +392,8 @@ start_daemon iscsid isakmpd iked sasyncd ldapd npppd
 echo '.'
 
 if [ X"${ipsec}" != X"NO" ]; then
-	if [ -f ${ipsec_rules} ]; then
-		ipsecctl -f ${ipsec_rules}
+	if [ -f /etc/ipsec.conf ]; then
+		ipsecctl -f /etc/ipsec.conf
 	fi
 fi
 

src/etc/rc.conf

@@ -1,4 +1,4 @@
-#	$OpenBSD: rc.conf,v 1.200 2014/12/03 20:13:49 florian Exp $
+#	$OpenBSD: rc.conf,v 1.201 2015/05/02 09:35:44 ajacoutot Exp $
 
 # DO NOT EDIT THIS FILE!!
 #
@@ -101,8 +101,6 @@ lockd_flags=NO			# for normal use: ""
 statd_flags=NO			# for normal use: ""
 amd_master=/etc/amd/master	# AMD 'master' map
 syslogd_flags=			# add more flags, e.g. "-u -a /chroot/dev/log"
-pf_rules=/etc/pf.conf		# Packet filter rules file
-ipsec_rules=/etc/ipsec.conf	# IPsec rules file
 pflogd_flags=			# add more flags, e.g. "-s 256"
 shlib_dirs=			# extra directories for ldconfig, separated
 				# by space