Added a siply wrapper .h/cpp pair to abstract away the fact that miniz in provided as a single .c file which we include directly, and to avoid linker problems.

library/PolyVoxCore/include/PolyVoxCore/Impl/MinizWrapper.h

@@ -0,0 +1,39 @@
+/*******************************************************************************
+Copyright (c) 2005-2013 David Williams
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+    1. The origin of this software must not be misrepresented; you must not
+    claim that you wrote the original software. If you use this software
+    in a product, an acknowledgment in the product documentation would be
+    appreciated but is not required.
+
+    2. Altered source versions must be plainly marked as such, and must not be
+    misrepresented as being the original software.
+
+    3. This notice may not be removed or altered from any source
+    distribution. 	
+*******************************************************************************/
+
+#ifndef __PolyVox_MinizWrapper_H__
+#define __PolyVox_MinizWrapper_H__
+
+// Diable things we don't need, and in particular the zlib compatible names which
+// would cause conflicts if a user application is using both PolyVox and zlib.
+#define MINIZ_NO_STDIO
+#define MINIZ_NO_ARCHIVE_APIS
+#define MINIZ_NO_TIME
+#define MINIZ_NO_ZLIB_APIS
+#define MINIZ_NO_ZLIB_COMPATIBLE_NAMES
+#define MINIZ_NO_MALLOC
+
+#define MINIZ_HEADER_FILE_ONLY
+#include "PolyVoxCore/Impl/miniz.c"
+
+#endif //__PolyVox_MinizWrapper_H__