These tests fail on our Window64 machine.
Feel free to revert them (or let me know and I will revert)
if they shouldn't be.

llvm-svn: 177743
diff --git a/clang/test/Tooling/auto-detect-from-source-parent-of-cwd.cpp b/clang/test/Tooling/auto-detect-from-source-parent-of-cwd.cpp
index 9692edc..f4ffba7 100644
--- a/clang/test/Tooling/auto-detect-from-source-parent-of-cwd.cpp
+++ b/clang/test/Tooling/auto-detect-from-source-parent-of-cwd.cpp
@@ -8,3 +8,4 @@
 invalid;
 
 // REQUIRES: shell
+// XFAIL: win64