FIXME: Missing unregister the codec watcher
hfp_hf_bluez5: Set the audio card codec

This patch updates the handsfree audio codec when the AG sends notifies
the codec for the succeeding incoming SCO connection.
handsfree-audio: Initial DBUS code

This code can register an handsfree audio agent and receive NewConnection and
Release calls.
handsfree-audio: Build handsfree-audio command line tool
handsfree-audio: Add Alsa dependancy
handsfree-audio: Link tool with Alsa
handsfree-audio: Implement alsa playback
handsfree-audio: Add SBC dependency
handsfree-audio: Link tool with SBC library
handsfree-audio: mSBC support