display: video streaming: add support for frames of different sizes

rhbz #815426

When playing a youtube video on Windows guest, the driver sometimes sends
images which contain a video frame, but also other parts of the
screen (e.g., the you tube process bar). In order to prevent glitches, we send these
images as part of the stream, using SPICE_MSG_DISPLAY_STREAM_DATA_SIZED.

1 files changed, 0 insertions, 0 deletions

diff --git a/spice-common b/spice-common
-Subproject e96dbb4172ec7a47a5b15d3b9e921e12623fdda
+Subproject 22fc0b0145876b90385c1c88923bcd72a638081