Merged revisions 80426 via svnmerge from

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

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r80426 | russell | 2007-08-22 17:54:03 -0500 (Wed, 22 Aug 2007) | 6 lines

Add some more documentation on iterating ao2 containers.  The documentation
implies that is possible to miss an object or see an object twice while
iterating.  After looking through the code and talking with mmichelson, I have
documented the exact conditions under which this can happen (which are rare and
harmless in most cases).

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@80427 65c4cc65-6c06-0410-ace0-fbb531ad65f3