windows fixes

libserpent/compiler.cpp

@@ -173,7 +173,7 @@ programData opcodeify(Node node,
     }
     // Comments do nothing
     else if (node.val == "comment") {
-        Node nodelist[] = { };
+        Node* nodelist = nullptr;
         return pd(aux, multiToken(nodelist, 0, m), 0);
     }
     // Custom operation sequence

libserpent/rewriteutils.cpp

@@ -2,6 +2,7 @@
 #include <iostream>
 #include <vector>
 #include <map>
+#include <string>
 #include "util.h"
 #include "lllparser.h"
 #include "bignum.h"

libserpent/util.cpp

@@ -5,6 +5,7 @@
 #include "util.h"
 #include "bignum.h"
 #include <fstream>
+#include <string>
 #include <cerrno>
 
 //Token or value node constructor