[tsan] Don't instrument __llvm_gcov_global_state_pred or __llvm_gcda*

[tsan] Don't instrument __llvm_gcov_global_state_pred or __llvm_gcda*

r274801 did not go far enough to allow gcov+tsan to cooperate. With this
commit it's possible to run the following code without false positives:

  std::thread T1(fib), T2(fib);
  T1.join(); T2.join();

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276015 91177308-0d34-0410-b5e6-96231b3b80d8