Add a new staticroute init script so that .... static routes can be configured!

Fixes Gentoo #288421.

conf.d/Makefile

@@ -1,14 +1,19 @@
 DIR=	${CONFDIR}
-CONF=	bootmisc fsck hostname local localmount network urandom
+CONF=	bootmisc fsck hostname local localmount network staticroute urandom
 
-TARGETS+=	network
-CLEANFILES+=	network
+TARGETS+=	network staticroute
+CLEANFILES+=	network staticroute
 
 MK=	../mk
 include ${MK}/os.mk
 include Makefile.${OS}
 include ${MK}/scripts.mk
 
+SOS?=	BSD
+
 network: network.in network.${OS}
-	cp network.in network
-	[ -e network.${OS} ] && cat network.${OS} >> network || true
+	cp $@.in $@
+	[ -e $@.${OS} ] && cat $@.${OS} >> $@ || true
+
+staticroute: staticroute.${SOS}
+	cp $@.${SOS} $@