cm audio: update sounds, add new ones

Change-Id: I6e45ac37b4fa3c3255019929a9f49742f1996de4
cm: Include private signing keys if present

Change-Id: Ic96d4d49d821cb03d5318e3e9ad93d02fb92573e
Merge "cm audio: update sounds, add new ones" into cm-10.1
Merge "cm: Include private signing keys if present" into cm-10.1
Merge branch 'cm-10.1' of git://github.com/CyanogenMod/android_vendor_cm into cm-10.1