r258720 - [MSVC Compat] Only warn for unknown clang-cl arguments

[Renato Golin via cfe-commits]

On 26 January 2016 at 01:56, Ehsan Akhgari <ehsan.akhgari at gmail.com> wrote:
> OK, I reverted the test in r258772.

Thanks!

Ok, the error code with no output will make for an interesting
investigation... :)

I'll try to collect as much info as possible. In the meantime, if you
have any insights, just let me know.

cheers,
--renato