protocol: Add support for the VP8 and h264 video codecs
protocol: Add support for the VP8 and h264 video codecs

Clients that support multiple codecs must advertise the
SPICE_DISPLAY_CAP_MULTI_CODEC capability and one
SPICE_DISPLAY_CAP_CODEC_XXX per supported codec.

Signed-off-by: Francois Gouget <fgouget@codeweavers.com>
Acked-by: Christophe Fergeau <cfergeau@redhat.com>

(cherry picked from spice-protocol commit 7937915d67702a5c4b5147b277c432f5555e3852)

Signed-off-by: Marc-André Lureau <a6f2b960a4aca61381fc650a67901b2ac8e83e6d@redhat.com>

fgouget/spice-common,SPICE/spice-common,fgouget/spice-common,fgouget/spice-common,SPICE/spice-common,SPICE/spice-common,fgouget/spice-common