Merged revisions 80424 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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r80424 | russell | 2007-08-22 17:40:27 -0500 (Wed, 22 Aug 2007) | 10 lines

When converting this code to use the list macros, I changed it so objects are
added to the head of a bucket instead of the tail.  However, while looking over
code with mmichelson, we noticed that the algorithm used in ao2_iterator_next
requires that items are added to the tail.  This wouldn't have caused any huge
problem, but it wasn't correct.  It meant that if an object was added to a
container while you were iterating it, and it was added to the same bucket that
the current element is in, then the new object would be returned by 
ao2_iterator_next, and any other objects in the bucket would be bypassed in
the traversal.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@80425 65c4cc65-6c06-0410-ace0-fbb531ad65f3