[Spice-devel] Opus support, both series (0/4 take 6, and 0/6 take 4)

[Jeremy White]

Following are hopefully final versions of the sound rework code that 
adds Opus support.

This patch series is different than the last as follows:
   1.  K&R brace style is used everywhere
   2.  The codec creation parameters use an integer flag, rather
       than a pair of booleans
   3.  Claiming Opus capability server side occurs only if we are set to
       a frequency that can handle Opus

Cheers,

Jeremy