This patch makes six compile with gcc 4.3 by including more header files.  It
is based on the advice at <http://gcc.gnu.org/gcc-4.3/porting_to.html>.

--- a/six/carrier.h
+++ b/six/carrier.h
@@ -2,6 +2,7 @@
 #ifndef CARRIER_H
 #define CARRIER_H

+#include <cstring>
 #include <iostream>
 #include <vector>

diff --git a/six/hexgame.cpp b/six/hexgame.cpp
index 720e977..5d0dafe 100644
--- a/six/hexgame.cpp
+++ b/six/hexgame.cpp
@@ -3,6 +3,7 @@
 #include <cassert>
 #include <cctype>
 #include <cstdio>
+#include <cstdlib>

 #include <string>

diff --git a/six/main.cpp b/six/main.cpp
index 7fb5c21..b925a0c 100644
--- a/six/main.cpp
+++ b/six/main.cpp
@@ -4,6 +4,8 @@
 #include "carrier.h"
 #include "misc.h"

+#include <cstdlib>
+
 #include <kapp.h>
 #include <dcopclient.h>
 #include <kaboutdata.h>