Add #include <iostream> which is needed now that Value.h doesn't include it


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14600 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bytecode/Archive/ArchiveReader.cpp b/lib/Bytecode/Archive/ArchiveReader.cpp
index 1e2d2b4..1d8530f 100644
--- a/lib/Bytecode/Archive/ArchiveReader.cpp
+++ b/lib/Bytecode/Archive/ArchiveReader.cpp
@@ -20,6 +20,7 @@
 #include "llvm/Module.h"
 #include "Support/FileUtilities.h"
 #include <cstdlib>
+#include <iostream>
 using namespace llvm;
 
 namespace {