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/lib/Support/Statistic.cpp b/lib/Support/Statistic.cpp
index 10f13f5..e500b55 100644
--- a/lib/Support/Statistic.cpp
+++ b/lib/Support/Statistic.cpp
@@ -28,6 +28,7 @@
 #include "llvm/ADT/StringExtras.h"
 #include <algorithm>
 #include <ostream>
+#include <cstring>
 using namespace llvm;
 
 // GetLibSupportInfoOutputFile - Return a file stream to print our output on.