int transfer(item, dest)
object item;
object dest;

Move the object "item" to the object "dest". Some kinds of tests are done,
and a number is returned specifying the result:

0: Success.
1: To heavy for destination.
2: Can't be dropped.
3: Can't take it out of it's container.
4: The object can't be inserted into bags etc.
5: The destination doesn't allow insertions of objects.
6: The object can't be picked up.

Parameter "dest" can be omitted, this_object() is then assumed as
default destination.

'transfer' does not test the notify_*_* and forbid_*_*-functions (see below)!

If an object is transfered to a newly created object, make sure that the
new object first is transfered to it's destination.

And monsters should arrive with 'move_player()' and not be moved in with
'transfer()' or 'move_object()'.

See also: efun/move_object, living/move_player, object/drop, object/get, object/prevent_insert, object/can_put_and_get, object/add_weight, object/notify_item_enter, object/notify_item_leave, object/forbid_item_enter, object/forbid_item_leave, object/notify_enter_container, object/notify_leave_container, object/forbid_enter_container, object/forbid_leave_container