Now that device selection has no sink/source-specific bits, we can have
generic device selection for this path. We do need to now track state
changes so we can look up the final device_id once the device is open,
though.
https://bugzilla.gnome.org/show_bug.cgi?id=740987
This is conceptually the right thing to do, and allows us to correctly
catch errors in device selection as well, which we could not do while
creating the ringbuffer.
https://bugzilla.gnome.org/show_bug.cgi?id=740987
Changes include the following:
* Update classname references
* Replace GST_BOILERPLATE_FULL with G_DEFINE_TYPE
* Use new GstAudioInfo struct and methods
* Use new buffer memory allocation scheme
Conflicts:
sys/osxaudio/gstosxaudioringbuffer.c