cm: Include private signing keys if present

Change-Id: Ic96d4d49d821cb03d5318e3e9ad93d02fb92573e
Merge "cm: Include private signing keys if present" into cm-10.1
Set Cryos Version in Settings as CRYOS_VERSION & add '#' before version number
Merge branch 'cm-10.1' of https://github.com/CyanogenMod/android_vendor_cm into cm-10.1