libvapour: forgot to add util_bitutil.hpp to util.hpp

libraries/libvapours/include/vapours/util.hpp

@@ -25,3 +25,4 @@
 #include "util/util_typed_storage.hpp"
 #include "util/util_intrusive_list.hpp"
 #include "util/util_intrusive_red_black_tree.hpp"
+#include "util/util_bitutil.hpp"