improve win32 path support, patch by Baptiste Lepilleur!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78823 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/System/Win32/Path.inc b/lib/System/Win32/Path.inc
index 80c7bd9..fccf001 100644
--- a/lib/System/Win32/Path.inc
+++ b/lib/System/Win32/Path.inc
@@ -156,7 +156,8 @@
   case 2:
     return NameStart[0] == '/';
   default:
-    return NameStart[0] == '/' || (NameStart[1] == ':' && NameStart[2] == '/');
+    return (NameStart[0] == '/' || (NameStart[1] == ':' && NameStart[2] == '/')) ||
+           (NameStart[0] == '\\' || (NameStart[1] == ':' && NameStart[2] == '\\'));
   }
 }