Applied Dominique's patch to compile STK with gcc 4.3.

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/trunk/supertuxkart@1375 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/lisp/lexer.cpp

@@ -19,6 +19,7 @@
 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include <sstream>
 #include <stdexcept>
+#include <cstring>
 
 #include "lexer.hpp"
 #include "translation.hpp"

src/moving_physics.hpp

@@ -23,6 +23,7 @@
 #include <plib/ssg.h>
 #include "btBulletDynamicsCommon.h"
 #include "callback.hpp"
+#include <string>
 
 class MovingPhysics : public Callback
 {