Fix a compile error. config.h is now needed because DataTypes.h doesn't

include it any more.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18993 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Linker/Linker.cpp

@@ -14,6 +14,7 @@
 #include "llvm/Linker.h"
 #include "llvm/Module.h"
 #include "llvm/Bytecode/Reader.h"
+#include "llvm/Config/config.h"
 #include <iostream>
 
 using namespace llvm;