Simple simulation code

Builds a native program on MacOS that runs the NuEVI firmware compiled for x86_64.
Only input is arrow keys for menu buttons for now. Only output is console and display.

Copied some more library files into the simulation folder, and renamed the modified *.cpp files from the libraries to *_sim.cpp.

simulation/include/Printable.h

@@ -0,0 +1,42 @@
+/*
+  Printable.h - Interface class that allows printing of complex types
+  Copyright (c) 2011 Adrian McEwen.  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#ifndef Printable_h
+#define Printable_h
+
+#ifdef __cplusplus
+
+// #include "new.h"
+
+class Print;
+
+/** The Printable class provides a way for new classes to allow themselves to be printed.
+    By deriving from Printable and implementing the printTo method, it will then be possible
+    for users to print out instances of this class by passing them into the usual
+    Print::print and Print::println methods.
+*/
+class Printable
+{
+  public:
+    virtual size_t printTo(Print& p) const = 0;
+};
+
+
+#endif
+#endif