Added missing include (Thanks to Justin Bronder

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@328 fdac6126-5c0c-442c-9429-916003d36597

src/OpenMesh/Core/Geometry/VectorT.hh

@@ -58,6 +58,7 @@
 #include <iostream>
 #include <assert.h>
 #include <math.h>
+#include <string.h>
 
 #if defined(__GNUC__) && defined(__SSE__)
 #include <xmmintrin.h>