strdup needs <cstring>. This fixes a build error with g++-4.3.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49218 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Target.cpp b/lib/Target/Target.cpp
index 375cd64..35cf648 100644
--- a/lib/Target/Target.cpp
+++ b/lib/Target/Target.cpp
@@ -15,6 +15,7 @@
 #include "llvm-c/Target.h"
 #include "llvm/PassManager.h"
 #include "llvm/Target/TargetData.h"
+#include <cstring>
 
 using namespace llvm;