stack-protector guard location

[Roland McGrath]

> Except that name is implemention namespace which is reserved.

1. All the world is not C.
2. We well know that in practice "implementation namespace" belongs
   to all the libraries and so forth that want to use it and rely
   on their mutual maintenance cooperation to decide conflicts.
3. It's still a lie, and that just ain't right. :-)


Thanks,
Roland