Waylandsink - same buffer on multiple wl displays
requested to merge dhobsong/gst-plugins-bad:waylandsink-same-buffer-on-multiple-wl_displays into master
Closes #1338 (closed)
This MR adds a unique WlBuffer context for each display to each WlBuffer, so that the same GstBuffer can be displayed on multiple waylandsink instances, each with their own connection to the wayland display.