replace all uses of PathV1::IsSymlink with PathV2::is_symlink.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123344 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index ca60507..10062d7 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -1325,8 +1325,9 @@
 
   std::string Lib64 = "lib";
   llvm::sys::Path Lib64Path("/lib64");
+  bool Symlink;
   if (!llvm::sys::fs::exists(Lib64Path.str(), Exists) && Exists &&
-      !Lib64Path.isSymLink())
+      (llvm::sys::fs::is_symlink(Lib64Path.str(), Symlink) || !Symlink))
     Lib64 = "lib64";
 
   std::string GccTriple = "";