Merge tag 'android-4.2.2_r1' into HEAD

Android 4.2.2 release 1
Update btif_media_task.c

Change middle quality to high quality for A2DP streaming to solve the issue of disortion in higher frequencies of music playback.  Refer to Android Google code issue 39632.
Merge branch 'jb-mr1' of https://github.com/AOKP/external_bluetooth_bluedroid into jb-mr1