Minor changes to work towards getting it compiling on linux again

source/Block.cpp

@@ -19,6 +19,8 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 #include "Block.h"
 
+#include <cstring>
+
 using namespace boost;
 
 namespace PolyVox

source/IndexedSurfacePatch.cpp

@@ -103,4 +103,4 @@ namespace PolyVox
 		size += m_vecTriangleIndices.capacity() * sizeof(m_vecTriangleIndices[0]);
 		return size;
 	}
-}
+}