Copy irrlichtmt to <root>/irr/

irr/include/irrpack.h

@@ -0,0 +1,25 @@
+// Copyright (C) 2007-2012 Nikolaus Gebhardt
+// This file is part of the "Irrlicht Engine".
+// For conditions of distribution and use, see copyright notice in irrlicht.h
+
+// include this file right before the data structures to be 1-aligned
+// and add to each structure the PACK_STRUCT define just like this:
+// struct mystruct
+// {
+//	...
+// } PACK_STRUCT;
+// Always include the irrunpack.h file right after the last type declared
+// like this, and do not put any other types with different alignment
+// in between!
+
+// byte-align structures
+#if defined(_MSC_VER)
+#pragma warning(disable : 4103)
+#pragma pack(push, packing)
+#pragma pack(1)
+#define PACK_STRUCT
+#elif defined(__GNUC__)
+#define PACK_STRUCT __attribute__((packed))
+#else
+#error compiler not supported
+#endif