(object_queue_is_empty): New function.
(object_queue_add_head): Update length.
(object_queue_add_tail): -"-
(object_queue_remove_head): -"-
(object_queue_remove_tail): -"-
(queue_to_list): New function.
(object_queue_kill): New function.

* src/queue.h (object_queue): Added length attribute.
(FOR_OBJECT_QUEUE_REMOVE): Update length.

Rev: src/queue.c:1.7
Rev: src/queue.h:1.6