[Bug target/67973] All the tests for -gstabs* fail on x86_64-apple-darwin14 with Xcode 7

[mrs at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67973

--- Comment #17 from mrs at gcc dot gnu.org <mrs at gcc dot gnu.org> ---
A back port is Ok.