From 80b74b43487761e4bf3a48a21862b87a43a284d9 Mon Sep 17 00:00:00 2001
From: Anton Korobeynikov <asl@math.spbu.ru>
Date: Sun, 1 Jun 2008 20:11:03 +0000
Subject: [PATCH] Prune empty dirs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51844 91177308-0d34-0410-b5e6-96231b3b80d8