Merged revisions 55397 via svnmerge from

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

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r55397 | dbailey | 2007-02-19 08:52:59 -0600 (Mon, 19 Feb 2007) | 3 lines

Changed iax2 process thread to detached to correct memory leak due to left over thread context on thread exit.  
Modified module unload process to avoid deadlocks on pthread cancels

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@55409 65c4cc65-6c06-0410-ace0-fbb531ad65f3