libtar: don't set parent dir's context when extracting a file

Change-Id: I83e11b0119c47cb691d4e05ac1e5515aeafbdc87
Signed-off-by: Vojtech Bocek <vbocek@gmail.com>
Do not restore file system on data/media devices

Change-Id: I600e7e9ce89621400531bceb472387aafc0d6ed8
Merge remote-tracking branch 'upstream/android-4.4' into android-4.4