Hi!

There are many undefined leftover QUEUEDEBUG_* macros in sys/queue.h,
which render the header unusable.
The BSD header defines them using:
#if defined(_KERNEL) && defined(QUEUEDEBUG)
#define QUEUEDEBUG_LIST_INSERT_HEAD(head, elm, field)                   \
        if ((head)->lh_first &&						\
            (head)->lh_first->field.le_prev != &(head)->lh_first)	\
	  panic("LIST_INSERT_HEAD %p %s:%d", (head), __FILE__, __LINE__);
...
#else
#define QUEUEDEBUG_LIST_INSERT_HEAD(head, elm, field)
...
#endif
etc.
Attached are two alternative patches, one removes all traces of the debug
macros (my preference), one defines the macros as empty.

	Jakub