libexif is now libjhead

b/12203995
Change-Id: I78c3eae1dc3a3e37da182513078749ad83d6d004
Merge tag 'android-4.4.3_r1.1' into HEAD

Android 4.4.3 release 1.1
Merge remote-tracking branch 'omni/android-4.4' into omni-4.4