Add <cstdio> include where needed by gcc-4.4.
Patch by Samuel Tardieu.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57291 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp b/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
index 684d7db..66a26cf 100644
--- a/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
+++ b/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
@@ -27,6 +27,7 @@
 #include "llvm/Target/TargetData.h"
 #include "llvm/Support/ManagedStatic.h"
 #include <csignal>
+#include <cstdio>
 #include <map>
 #include <cmath>
 #include <cstring>