[PATCH xserver v3 00/22] Per window flips in Present with support for them in Xwayland

[Roman Gilg]

This revision rebases the patch set on current master and does changes
requested by Michel Dänzer.

Please note that while compilation works fine for me, I can't test the runtime
any longer because the latest changes to xserver master require a newer mesa
build, and although I tried extensively I can't get the latest mesa code
to work on my system.

Also note, that I'm not able to spend more time on this patch set besides minor
changes. So this is the last revision I'm sending in.