Revert "[compiler-rt] Migrate llvm::make_unique to std::make_unique"
Revert "[compiler-rt] Migrate llvm::make_unique to std::make_unique"

The X-ray unit tests in compiler-rt are overriding the C++ version by
explicitly passing -std=c++11 in the compiler invocation. This poses a
problem as these tests are including LLVM headers that can now use C++14
features. I'm temporarily reverting this as I investigate the correct
solution.

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@368952 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt