[Bug bootstrap/63853] [5.0 Regression] The use of strchrnul breaks bootstrap on x86_64-apple-darwin14.

[iverbin at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63853

--- Comment #5 from Ilya Verbin <iverbin at gmail dot com> ---
So, I'll implement strchrnul in libiberty, ok?