Release 0.5.2

- spice: server: new-api:

     + streaming-video, agent-mouse, playback-compression.

last commit working with vdesktop repo

client: x11: fix a crash caused by a call to a destroyed window. #578458

spice server: renaming library and includedir

fix wrong access to ring item

more permissive video identification

m Write a tag message

spice: client: support for building windows client using

spice: client: add foreign menu
spice: client: add controller