media_codecs: Add Google's VP8 and VP9 decoders for 4.4
overlay: remove adb by default cm-11.0 is running
BoardConfig: remove deprecated usb config
AriesParts: improve low_ram switch
BoardConfig: add QCOM_ENHANCED_AUDIO flag
BoardConfig: add BOARD_HAVE_PRE_KITKAT_AUDIO_BLOB := true flag
AriesParts: add LowRam status
BoardConfig: Enable support for mHeap-based screenshots

Thanks to Michael Bestas