selinux: Use a more reliable sentinel to flag /data labelling

/data/anr isn't present on all devices, /data/system is

Change-Id: Ifba71d073dc7b577911386cff316e8a19662cd0d

    cm-10.1

commit b52874de531340af02ac8e664d828dcd02d2d860 1 parent d2d1a7f
rmcc authored 6 days ago

On branch raumzero
Changes to be committed:
	modified:   prebuilt/common/etc/init.d/50selinuxrelabel