dbus: change owner and mode for dbus-daemon-launch-helper in postinst

Add code in dbus postinst to change owner and mode for
dbus-daemon-launch-helper.

[BUGID #603]

Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>

meta/recipes-core/dbus/dbus.inc

@@ -53,7 +53,9 @@ pkg_postinst_dbus() {
 			--ingroup "$MESSAGEUSER" "$MESSAGEUSER"
 
 	grep -q netdev: /etc/group || addgroup netdev
-	chmod u+s /usr/libexec/dbus-daemon-launch-helper
+
+	chown root:"$MESSAGEUSER" /usr/libexec/dbus-daemon-launch-helper
+	chmod 4754 /usr/libexec/dbus-daemon-launch-helper
 
 	# add volatile after new user/grp are created
 	echo "d messagebus messagebus 0755 /var/run/dbus none" > /etc/default/volatiles/99_dbus

meta/recipes-core/dbus/dbus_1.4.1.bb

@@ -1,6 +1,6 @@
 include dbus.inc
 
-PR = "r0"
+PR = "r1"
 
 SRC_URI[md5sum] = "99cb057700c0455fb68f8d57902f77ac"
 SRC_URI[sha256sum] = "caa1a0ded2d0f2e95c1d4ec7e3c8bd44834928c5b0ed41a7189963f3593983bd"