[Bug c/53075] -Werror=pedantic should be equivalent to -pedantic-errors

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53075

--- Comment #1 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
More discussion in the topic:
https://gcc.gnu.org/ml/gcc-patches/2014-10/msg01799.html