Massive changes to the organisation of PolyVoxCore and PolyVoxYtil.

Also added start of logging capability.

library/PolyVoxUtil/include/Export.h

@@ -0,0 +1,35 @@
+#pragma region License
+/******************************************************************************
+This file is part of the PolyVox library
+Copyright (C) 2006  David Williams
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+******************************************************************************/
+#pragma endregion
+
+#ifndef __PolyVoxUtil_Export_H__
+#define __PolyVoxUtil_Export_H__
+
+#ifdef WIN32
+	#ifdef POLYVOXUTIL_EXPORT
+		#define POLYVOXUTIL_API __declspec(dllexport)
+	#else
+		#define POLYVOXUTIL_API __declspec(dllimport)
+	#endif
+#else
+	#define POLYVOXUTIL_API __attribute__ ((visibility("default")))
+#endif
+
+#endif