Use the shiny, new top-level 'distribution' target when populating the

chroot area.  This fixes make release of HEAD on systems that have a
/usr/src with bsd.endian.mk and a matching /usr/obj but haven't installed
the world in /usr/obj and thus have no bsd.endian.mk /usr/share/mk.

release/Makefile

@@ -361,7 +361,7 @@ release rerelease:
 	@echo ">>> make release for ${TARGET} started on `LC_ALL=C TZ=GMT date`"
 	cd ${WORLDDIR} && ${NATIVEMAKE} -DNO_GAMES -DNO_HTML -DNO_INFO -DNO_MAN \
 	    -DNO_PROFILE installworld DESTDIR=${CHROOTDIR}
-	cd ${WORLDDIR}/etc && ${NATIVEMAKE} distribution DESTDIR=${CHROOTDIR}
+	cd ${WORLDDIR} && ${NATIVEMAKE} distribution DESTDIR=${CHROOTDIR}
 	if [ -f /etc/resolv.conf ]; then \
 		cp -p /etc/resolv.conf ${CHROOTDIR}/etc; \
 	fi