[patch] Produce an error for -munknown-to-clang-option

[Eli Friedman]

On Tue, Sep 24, 2013 at 6:46 AM, Rafael Espíndola <
rafael.espindola at gmail.com> wrote:

> The attached patch makes the driver produce an error for unknown -m
> options.
>
> Since the --machine= alias was already broken, I just reported
> llvm.org/pr17342 and removed it in this patch.
>
>
> LGTM.

-Eli
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