I created this patch while upgrading XFCE to 4.14.
The xfce4-wm port, containing xfce window manager, can link to this library using it as a backend for vsync.
I'd like to add it to the ports tree, so that, after the XFCE upgrade, I can enable support for it to the window manager.
I set x11 as port maintainer, is this acceptable?
Related xfce review: D21278