[llvm] r258627 - [Bitcode] Insert the darwin wrapper at the beginning of a file when the

[Rafael Espíndola via llvm-commits]

> I think it would also be fine to teach the llvm-bcanalyzer to emit this, even if it's behind a flag to do so.
>

Good point. Since it is normally used with FileCheck it can probably
just always print a first line saying if it seeing a warper or a plain
bitcode.

Cheers,
Rafael