display seamless migration: no need to trace the generation of the primary surface
display seamless migration: no need to trace the generation of the primary surface

We no longer process destroy_primary or destroy_surfaces while waiting
for migration data.

SPICE/spice,freedesktop-unofficial-mirror/spice__spice,elmarco/spice,mathslinux/spice,Fantu/spice,fgouget/spice,alon/spice-server,elmarco/spice,freedesktop-unofficial-mirror/spice__spice,SPICE/spice,SPICE/spice,freedesktop-unofficial-mirror/spice__spice,ya-mouse/spice,elmarco/spice,mathslinux/spice,elmarco/spice,Fantu/spice,fgouget/spice,freedesktop-unofficial-mirror/spice__spice,alon/spice-server,alon/spice-server,mathslinux/spice,mathslinux/spice,Fantu/spice,mathslinux/spice,alon/spice-server,fgouget/spice,alon/spice-server,fgouget/spice,ya-mouse/spice,freedesktop-unofficial-mirror/spice__spice,elmarco/spice,ya-mouse/spice,Fantu/spice