Move to Wayland

Increasing efforts are going into Wayland as the future of the display server in Linux.  Moving to Wayland by Red Hat 7 may be early, but not impossible.

Include as a technology preview perhaps if timescales are tight?

Backwards compatibility is built in from what I can tell.  Network transparency is also on the todo list (albeit not as near the top as I'd like).  Having said that, I'd like to see SPICE pushed as a networked connectivity layer for GUI sessions regardless of whether they are physical or virtual.