systemd-systemctl-native: add support to recursive services

Some services can reference others for installation thought the Also
key; systemctl now handles it calling itself recursively for each
service.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>

meta-oe/recipes-core/systemd/systemd-systemctl-native/systemctl

@@ -49,3 +49,11 @@ for r in $wanted_by; do
 	ln -s $service_file $ROOT/etc/systemd/system/$r.wants
 	echo "Enabled $service for $wanted_by."
 done
+
+# call us for the other required scripts
+also=$(grep Also $ROOT/$service_file \
+           | sed 's,Also=,,g' \
+           | tr ',' '\n')
+for a in $also; do
+	$0 --root=$ROOT enable $a
+done