Support/Path: Deprecate PathV1::isDirectory and replace all uses with PathV2::is_directory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123209 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Unix/Path.inc b/lib/Support/Unix/Path.inc
index b39e465..bdd13a6 100644
--- a/lib/Support/Unix/Path.inc
+++ b/lib/Support/Unix/Path.inc
@@ -823,7 +823,8 @@
   Buf.resize(path.size()+8);
   char *FNBuffer = &Buf[0];
     path.copy(FNBuffer,path.size());
-  if (isDirectory())
+  bool isdir;
+  if (!fs::is_directory(path, isdir) && isdir)
     strcpy(FNBuffer+path.size(), "/XXXXXX");
   else
     strcpy(FNBuffer+path.size(), "-XXXXXX");