Merged revisions 115512 via svnmerge from

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

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r115512 | russell | 2008-05-07 11:24:09 -0500 (Wed, 07 May 2008) | 11 lines

Merged revisions 115511 via svnmerge from 
https://origsvn.digium.com/svn/asterisk/branches/1.2

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r115511 | russell | 2008-05-07 11:22:49 -0500 (Wed, 07 May 2008) | 3 lines

Remove remnants of dlinkedlists.  I didn't actually use them in the final version
of my IAX2 improvements.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@115513 65c4cc65-6c06-0410-ace0-fbb531ad65f3