Unbreak build with gcc 4.3: provide missed includes and silence most annoying warnings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47367 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/PerfectShuffle/PerfectShuffle.cpp b/utils/PerfectShuffle/PerfectShuffle.cpp
index e7b9421..26c4cf44 100644
--- a/utils/PerfectShuffle/PerfectShuffle.cpp
+++ b/utils/PerfectShuffle/PerfectShuffle.cpp
@@ -17,7 +17,7 @@
 #include <iostream>
 #include <vector>
 #include <cassert>
-
+#include <cstdlib>
 struct Operator;
 
 // Masks are 4-nibble hex numbers.  Values 0-7 in any nibble means that it takes