[PATCH] [clang-cl] Ignore the /o option when /P is specified.

[Greg Bedwell]

Actually, looking at it more I'm not even sure that MSVC supports the '/out:' form except for in the linker.  I think cl.exe may also be interpreting the command line from CMake's cmcldeps as '/o' 'ut:<location>'.  Either way, it is ignored so the behaviour after this patch is correct.


http://reviews.llvm.org/D10313

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