[PATCH] Wrong page protection flags on FreeBSD/PPC

[Krzysztof Parzyszek]

The LLVM unit tests (Support) fail on FreeBSD/PPC with a segmentation 
fault.  The problem is in this part:
   if (PFlags & MF_EXEC)
     Memory::InvalidateInstructionCache(Result.Address, Result.Size);

In order to use the instructions in the Invalidate... function, the 
memory needs to be readable.

The proposed fix is to always add PROT_READ to PROT_EXEC on FreeBSD.

-Krzysztof

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