Merged revisions 328717 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.10

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  r328717 | twilson | 2011-07-18 20:55:32 -0500 (Mon, 18 Jul 2011) | 14 lines
  
  Merged revisions 328716 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.8
  
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    r328716 | twilson | 2011-07-18 20:35:53 -0500 (Mon, 18 Jul 2011) | 7 lines
    
    Make AST_LIST_REMOVE safer
    
    AST_LIST_REMOVE shouldn't modify the element passed in if it isn't found. This
    commit also adds linked list unit tests.
    
    Review: https://reviewboard.asterisk.org/r/1321/
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@328718 65c4cc65-6c06-0410-ace0-fbb531ad65f3