[Bug other/102664] contrib/gcc-git-customization.sh uses echo -n, which isn't portable

[egallager at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102664

--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
I think one of the Martins might be taking part of the `expr` usage by
rewriting gcc-descr here:
https://gcc.gnu.org/pipermail/gcc-patches/2022-January/588849.html