Visual bell patch for emacs on OSX

[João Távora]

Hello,

This has probably been discussed here before, but I can't find the
reference. Can someone explain why the following patch:

   https://gist.github.com/capitaomorte/1907807

Cannot be added to src/nsterm.m? Is it a copyright issue, or does it no
longer apply?

Because my two main gripes with emacs on OSX were this and the native
fullscreen. Now we have ns-use-native-fullscreen, we could has well get
rid of that ugly box in the middle...

Thanks,
João