Tweak rpki-client to create all 4 output file formats from a single

compute, based upon flags.  OpenBGPD compatible format by default if
no options, to integrate with bgpd.conf and bgpctl reload.  Adapt
mtree and stuff.  This will receive further refactoring...
ok benno job

src/etc/Makefile

@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile,v 1.473 2019/11/29 03:22:13 deraadt Exp $
+#	$OpenBSD: Makefile,v 1.474 2019/11/30 02:31:12 deraadt Exp $
 
 .include <bsd.own.mk>
 
@@ -183,7 +183,7 @@ distribution-etc-root-var: distrib-dirs
 	${INSTALL} -c -o root -g wheel -m 444 /dev/null \
 	    ${DESTDIR}/var/db/locate.database
 	${INSTALL} -c -o _rpki-client -g wheel -m 644 /dev/null \
-	    ${DESTDIR}/var/db/rpki-client/roa
+	    ${DESTDIR}/var/db/rpki-client/openbsd
 	${INSTALL} -c -o ${BINOWN} -g wheel -m 640 /dev/null \
 	    ${DESTDIR}/var/log/authlog
 	${INSTALL} -c -o ${BINOWN} -g wheel -m 640 /dev/null \

src/etc/examples/bgpd.conf

@@ -1,4 +1,4 @@
-# $OpenBSD: bgpd.conf,v 1.16 2019/11/29 03:42:10 deraadt Exp $
+# $OpenBSD: bgpd.conf,v 1.17 2019/11/30 02:31:12 deraadt Exp $
 # example bgpd configuration file, see bgpd.conf(5)
 
 # define our own ASN as a macro
@@ -14,7 +14,7 @@ prefix-set mynetworks {		\
 	2001:db8:abcd::/48	\
 }
 
-include "/var/db/rpki-client/roa"
+include "/var/db/rpki-client/openbgpd"
 
 # define bogon prefixes which should not be part of the DFZ
 prefix-set bogons {