Merged revisions 288418 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.8

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  r288418 | dvossel | 2010-09-22 12:49:56 -0500 (Wed, 22 Sep 2010) | 18 lines
  
  Merged revisions 288417 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.6.2
  
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    r288417 | dvossel | 2010-09-22 12:49:05 -0500 (Wed, 22 Sep 2010) | 11 lines
    
    Merged revisions 288416 via svnmerge from 
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      r288416 | dvossel | 2010-09-22 12:48:15 -0500 (Wed, 22 Sep 2010) | 5 lines
      
      RFC3261 section 12.2 explicitly says out of order requests are responded with a 500 Server Internal Error response.
      
      ABE-2458
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@288419 65c4cc65-6c06-0410-ace0-fbb531ad65f3