Provide Path::isSpecialFile interface for PR5568.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89765 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/System/Win32/Path.inc b/lib/System/Win32/Path.inc
index 573369e..9adeca2 100644
--- a/lib/System/Win32/Path.inc
+++ b/lib/System/Win32/Path.inc
@@ -357,6 +357,11 @@
   return attr != INVALID_FILE_ATTRIBUTES;
 }
 
+bool
+Path::isSpecialFile() const {
+  return false;
+}
+
 std::string
 Path::getLast() const {
   // Find the last slash