Fixes to make LLVM compile with vc7.1.

Patch contributed by Paolo Invernizzi!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16152 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Utils/LowerSwitch.cpp

@@ -20,6 +20,7 @@
 #include "llvm/Pass.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/ADT/Statistic.h"
+#include <algorithm>
 using namespace llvm;
 
 namespace {