Permission changes in ICS and Jelly Bean that restrict /dev/diag
access to qcom_diag group mitigate CVE-2012-4220 and CVE-2012-4221

Change-Id: I935b393cb275ab1e6470b0cb40478b279cd5c428
Revert "Start "adb shell" as root"

This reverts commit 2d9c37fa7e1a9dcde8726910feee1aad1a71987f.
Route a2dp output via audio.primary.so

Change-Id: I2b5f2bebafaccb6f56005bb39e97486e36379276