Linus' patch is in Metacity 2.19.8
"Linus Torvalds' patch is in Metacity 2.19.8, an unstable release of Metacity. Hopefully it will stay around. Apparently the release is mostly about cleaning up RTL (right to left text) support. I guess that's good for those who go by Hebrew or Arabic. Still, Linus' patch for configuration of titlebar actions is what makes this release an eye-catcher because of what happened earlier this year."