[PATCH] Make compiler-rt tests work with relocatable SDKs on OS X

[Alexander Potapenko]

I've recently deinstalled LLVM from our Mavericks machine and am seeing the same problem now.
But I'm not convinced it's a good idea to make all these symlink changes in compiler-rt CMake files. Instead this should probably be done in Clang.

http://reviews.llvm.org/D4047